Shiftpoints I'm not positive abou to be 100% honest man.
The Only thing suspension wise that I don't have is an aftermarket k member. Old owner left me with uppers and lowers (not sure of the brand), aluminum driveshaft, steed sport springs, SFC, sway bars don't look stock but I'm not positive abou that one, adjustable struts and I put adjustable shocks on it.
Tires, I was running 275/40/17 Mickey thompson street radials...
Are you still on the stock axles? If yes, you should get some 31 splines before launching too high on those Mickey T's, but yes you need to launch it between 4500-5500 and see what works. I launched at 5500 once on BFG drag radials and got a 1.77 60ft. You could probably get another .3-.4 out of it with practice.
At your power level, you should be fine launching at 4500 on MTs. With that same exact trap speed, I ran a 13.40 with a 1.9 60 foot when I was NA. So you can definatley improve more, better 60 foot, harder launch, and banging gears.