With a smaller turbo you CAN run high boost. I just won't flow as much air. Bar is another way of measuring boost. I can't remember what it is though....something around 20psi?

I know someone here knows.
EDIT: Please stop asking what you want.....we don't know what you want. Give us something to work off of. Like your ultimate goal. Quick spool up with decent hp or ungodly hp that kicks right before your rev limiter. Tell us what you are gonna do with the car.