since you're thizz I'll help you out.
2 10"s usually only need 2-2.5 cu ft ported for a pair. Kickers do want more airspace tho, and that aq1200 is gonna power them just right.
Personally I'd do 2-2.5 cu ft tuned to 32-35 hertz. 3.5 cu ft seems way too big IMO
Check your PM bro.