injector help

[chengsta]

I just wanted some input on what injector size I should go with for my setup. My goal is no more then 300hp, 20-21psi race and 10psi street, and this will be my DD. I'm looking at either PTE 680cc($265) or some RC 550cc. I found a guy selling some *new* RC 550cc for $160. What else would I need to get if anything other then a dyno tune which I will do after receiving and installing everything.

My current mods are: 1999 Mitsubishi Eclipse Spyder GS-T
*real* EVO3 Big16g turbo
ported 2g manifold
ported 2g o2 housing
AFPR
3" turbo back exhaust
SAFC
Boost/air-fuel gauge
NGK plugs and wires
Monza SSQV BOV
ebay hard intake & filter

parts coming in:
walbro190lph & rewire kit
MAF translator
2G DSM ETS 7" Street Kit from extremeturbosystems.com
HKS EZ EVC
*pending* 2g logger