You need to take the car to a pro rather than guessing,

The chip numbers you have given are just prom numbers, nothing to do with the data on it. How can you try to tune the car or know if it is safe to "boost over 10psi" without knowing what the chip is calibrated for?

If its a std chip and you wind the boost up you WILL loose the engine, so i wouldn't go any further.

And yes the fuel pressure at 2.5 bar is way low. Another engine failure in the waiting.