Hey guy i need some help picking out pistions.my setup and goals are 1000 rwhp and good off bost drivabilty and power

The motor is a 5.3 bored/ stroked to 383.
317 prc 2.5 with 72cc chambers
Ls6 im/tb
Twin mid mount billit pt 5858s
The car will mostly be on pump and meth on the street and turnd up on e85 for tge track at around 1khp
The pistons that were in the motor would have come out to 9.5-1

Should i going alittle lower of stay around that comp?

What piston to wall should i be going after?

Thanks for helping a noob out

-alex

 

Also any input on pistion brand would be great