A low boost setup would be very close to that- but limited. For a 230 that won't see the high side of 5K or 8-10psi, I'd go with a small T3/T4 hybrid with a turbine housing around .69 get an O or P trim T4 compressor side & you'll get all the air you need, starting down low (with the T-3 style turbine hsg). The T3 will have an integral wastegate, saving on plumbing.
If you're hell bent on keeping the stock pistons, I'd be cautious about exceeding 8-10 psi. The chambers are not very efficient, adding to the possibility of detonation. That's bad.
Why 300hp? Is this just a # that sticks in your head, or is there an attached goal to it?
