Stock to 270-300rwhp for under $2500? Suggestions?

[Piston]

I got 325 rwhp. Here is the Combo. I think it still could use some help on the tune.

TFS Heads Stage II ported. 275cfm @ .550
255lph Intank fuel pump.
24 lb Injectors
Edelbrock Upper/Lower Preformer intake ported to flow 275cfm.
Anderson B2 Cam (Nitrous/Blower Cam) The motor is NA though. On 1.6 RR although 1.7RR are recommened. I'm running the 1.6 cause my heads were milled and I wouldn't clear the pistons.
Adjustable Regulator by aeromotive.
Full tube Headers Hookers.
Off Road H-pipe
70mm TB
75 MAF
PMS computer which I think can be tuned more.

Things I would change would have to be the Upper/lower Intake would either be the HOlley or The TFS. Good Luck with your combo.