I would love to battle you when the teams done also if you need any help breeding and ev training i can also help breed for you - We still need to do that trade :p
Nature- Go adamant (atk -spatk) because you dont want to loose valuble def and you have no spmoves.
EVs- I would go plain old 252hp 252atk 4speed or 252atk 4def 252speed (252speed only if you go a differant fighting move though as notch said it isnt the best idea and 252 def or hp is fine) even with spdef evs its spdef is rubbish.
Item@- I personally would go flame orb because with guts it changes the 50% atk loss into a 50%atk gain
Or Life orb is also an option
Movest- Good movest payback and stone edge are a must and i personally would go mach punch for priority and no stat drops plus with flame orb becomes 90power.
Facades power becomes 140 when burned plus guts bonus 210 power :)
Nature- I personally would go jolly because it needs that speed gain and has beest atk anyway.
EVs- 252atk 252speed 4hp would be good.
Item@- Im not to sure which to use either way its atk is massive with each item.
Movest- Fire punch over flame charge darmantian is frail.
Superpower over hammer arm you want to keep speed but you can always switch out.
Uturn would be good in there to do damage as well as switch out to loose stat drops.
Nature- Good nature but you may as well go timid seen as you have no pyshcal moves.
But modest nature may be better seen as its speed is a massive base 145.
EVs- 4hp 252spatk 252speed
Trait- Though hydration could be good unburden would be better especially if your holding bug gem.
Item@- Bug gem with unburden but you could always run timid and use choice specs
Movest- Good movest Bug buzz becomes 270power with bug gem and stab so that could be an instant Ko on most pokemon plus you get a speed boost thanks to unburden.
You may have some troubles breeding a pokemon with the right IVs for hp rock.
Hidden power rock
Nature- It looks like a mixed sweeper so im not to sure about adamant i would personally go modest for a spsweeper.
EVs- Looks about right but you could always go spsweeper 252spatk 252speed.
Trait- Im not sure wether its ability is avalible through dw yet but may be helpfull as it bypasses the opponents safeguards and dual screens (Infiltrater by the way).
Item@- Rocky helmet? not the best choice black sludge is good though.
Movest- Once again people may disagree but i would go spsweeper.
It has access to nasty plot which is a must doubling spatk, also heat wave to destroy ice and hiddenpower water maybe to kill rock and ground types(hp fight is also a good optian).
as for the last move sludge bomb for stab or as you have giga drain for healing.
Hidden power water
I think Marowak is NU in smogon tiers.
I also hate Marowak :) and IMO doesnt fit in the team to well ill look for a replacement but ill still help.
Nature- Ok nature for the set i would use adamant is also an option.
EVs- 252atk or hp 252def would be good
Item@- A must thick club brings its atk to 160 :)
Movest- Swords dance would raise your base atk to 320 so maybe consider that.
Thunder punch will cover water weekness and double edge could work well with rock head.
Flamethrower? earthquake or stone edge.
Nature- Adamant is good jolly is also an option.
EVs- 252atk 252speed
Item@- Quik claw only works 10% of the time so maybe not the best option, leftovers would be good.
Movest- leaf storm should be replaced by seed bomb or wood hammer.
Also rock polish is a option.
Rest looks good.
-Because you asked for it
EVs- 252hp 252spatk or you can go 126hp 252spatk and 126spdef
Trait- You have 3 options (cursed body-"The Pokemon has a 30% chance to disable any move that hits it."-gives it a good annoying twist can go well with high def) or (water absorb-"Heals 25% HP when hit by a Water-type attack."-lets face it no ones going to be stupid enougth to use a water type atk on a water pokemon) or (damp-"Prevents the use of Selfdestruct or Explosion. Prevents Aftermath from doing damage."-useless)
Trait- i personally would go cursed body though some people are stupid and water absorb is ok if you fail to get cursed body.
Item@- Choice specs works great.
Movest- choice specs + water spout = mass destruction.
Role- special tank
As you can see this is a full on sp movest and will wreck havock with choice specs shame Jellicent has low speed.
Nature- Bold (def-atk) atks not needed.
EVs- 252hp 252spdef Great wall in the making.
Trait- Cursed body defintly.
Item@- Leftovers is a must for this walling set.
Movest- pain split is avalible goes well with low hp.
? there are many moves to choose from (confuse ray, taunt, even acid armour)
toxic recover and leftovers = good stalling.
scald is in case of taunt and lets you do your own damage.
I personally would go confuse ray but taunt makes a good lead
Another option and replacement
Nature- Modest to make its spatk better than its already insane spatk.
EVs- 252hp 252spatk 4def
Trait- For this set go Analytic- if it attacks last power of move is raised by 30%.
Item@- A popular item is air balloon also choice specs works well with this set.
Movest- As i said choice specs could work well with this set.
Charge beem or thunderbolt which is probably better
Hidden power Fire, flying or ice
Volt switch or my personal fav tri atk
Charge beem may have low power 50 but gets stab 75 and choice specs boost 112.5 then a good chance of spatk boost after boost making it 140.625.
but thunderbolt is probably better when used 95 plus stab 143 plus choice specs boost 214.
volt switch is for a good get away and hidden power which ever you choose provides weekness coverage.
Finally, only conkelduur is in smogons ou tier look here for there ou tiers your other pokemon are from other tiers such as bl and nu.
Sorry If this is all a little scruffy and long but i hope it helps took me ages >:) This is like 4x longer than my usual answers.