you already have a monferno which will become to an infernape, a strong fire/fighting type
but if you want to use one of them I will give you the answer
lucario
pros:
1. have amazing attack and spc.attack
2. have a great dual typing
3. have a decent movepool
4. great speed
cons:
1. late mid-game access
2. you need to hatch riolu egg to get it
3. when its hatch, it will become level 1, soooo a HARD time grinding
4. happiness evolve method, that will be VERY VERY FUN!
toxicroak
pros:
1. decent attack
2.average speed, HP, and speed
3. early mid-game access
4. decent movepool
5. its ability dry skin could help it out especially against though guy or dwayne johnson or crasher wake(i know this isnt that funny)
cons:
1. weaker than lucario
2. bad defense and spc.defense
3. its ability dry skin could let it down especially with elite four member flint (i dont know what to call this men)
so there it is, the pros and cons
you want moveset in your tag? I give you moveset in my answer
lucario @anything
nature: I recommend dont lower your speed, attack or spc.attack
- aura sphere/close combat
- sword dance/calm mind
- dragon pulse/strength/filler
- bone rush/strength/filler
toxicroak @anything
nature: I recommend dont lower your speed, attack or spc.attack
- brick break/revenge
- poison jab/sludge bomb
- nasty plot/sucker punch
- strength/filler
here you go
Hope I helps!