I'd reccomend 10psi, maybe 12. If you want the turbo to last.
people run 14psi, with FMIC's, due to the pressure drop being only a couple of psi at this level, where as the stock cooler runs out of legs at this boost.
Bleed valves suck (although I have one). An EBC will hold boost and prevent the 'spike' associated with bleeders. Boost will be brought on faster and hold (meaning faster accelleration --- something that a dyno won't pickup).
If you intend sticking with the stock turbo and are not a regular visitor to the race track, put your money back in your pocket and don't buy the FMIC, unless you get one that only just flows say 300HP or just under. A cooler of this size will retain the valuable response and if designed well will allow a few extra psi without a serious pressure drop.
When shopping for an interccoler reccomendation ask :
" So how much horsepower can this intercooler you are reccomending flow?"
They answer " Mate this one is good for over 500HP! just what you need mate!"
You respond " No thanks. Which intercooler can flow upto 300HP max with some efficiency, cause thats all I am planning on making with this engine?"
Ditto for head porting, turbo sizing, camshaft selection, throttle body size etc.....