It knows, Close Combat, U-Turn, Grass Knot and Fire Blast/Overheat.
252 Spd / 128 Atk / 128 SpA Serious Nature
Do not comment on anything else. Just tell me which move is better.
Overheat is usually used to break walls. But considering your using it in sun Fire Blast will be hitting very hard also as well as allowing you to continue a sweep. So for that reason run Fire Blast. Though run Overheat without sun.
;) Sorry but I can't let you run that spread and nature.
252 atk / 4 satk / 252 speed and hasty :) I'm not letting you run serious.
This a mixed Infernape, which means the x0.5 SpAtk won't be much a downfall, and has nice U-turn to escape.
I would suggest using Overheat for higher power and bit more reliable accuracy also.