Hello m8,
I am back for a few days, (I am covering my aerial comapany for 2 weeks while my brother stays with his wife and looks after there new born baby)
If you can get the car up to us we can do you a custom spec2 sweep test & ramped load remap with external lambda and egt logging to get it right. Problem with stage2 230bhp+ is the EGTs and lambda if we can keep the car nice and rich at the top end without compromise to the power and at the same time keeping the egts within the threshold, then your should have no problem getting 230+bhp
The 3 bar fuel should be fine, spend you money on a good intercooler, with pipe work which does not bottle neck the flow (cheap ebay ones have poor designed pipes)
So when are you comming?

Nick