Golem: Either 1. get rid of Sandstorm (with Choice Band you can only use Sandstorm until you switch out), or 2. change the item to Leftovers. If you choose no. 1, then switch the ability to Rock Head and teach it Double-Edge. If you choose no. 2, enough said.
Kabutops: I'm suggesting ninja's suggestion, make it a Staller. Change the ability to Battle Armor (crits are annoying), and forget Swords Dance for Toxic. Waterfall is in case of Taunt.
Hariyama: Change the Ability to Guts for extra power. I'm not a big fan of Fake Out (after the first turn, it's a waste of a moveslot), and if you want to change it, then change it to Rock Slide for coverage. Keep Fake Out if you want. Change Wake Up Slap to Brick Break for higher power and breaking of screens.
Alakazam: Couldn't have trained a better one myself.
Noctowl: See above.
I wish you many wins and I hope this helps!