I like my idea of sun abuser set. The idea behind this is to get him set up as quickly as possible with sun, and deal heavy damage to the other team before they can really set up a whole lot. One turn to set up, then wreck faces in with max damage possible Infernape.
EV's: 252 SpAtk, 252 Spd, 4HP.
Item: Hmm... Probably Life Orb, or Choice Specs/Scarf.
Moves: Sunny Day, (or get a teammate to do that, and give him a better move.) Flamethrower, Blast Burn/Overheat, and Solarbeam. I realize that this leaves him incredibly weak to Gyrados, but in that case, you switch out. Flamethrower for reliable STAB, Solarbeam for water and ground coverage, plus the ability to spam a 120 BP move without side effects (and yes I know Flamethrower has more BP with STAB and also gets sun boosted. So it's really just for coverage. But its fun to spam Solarbeam. :D) and Blast Burn/Overheat for a 140/150 BP STAB sun boosted attack that will leave a dent in almost anything, though they are last resort attacks. On a side note, Groudon is great for Solar spamming because Drought requires no setup.