If you are worried i about it i would just stick with the spec you have. Car will be very quite like this and is it worth the extra hassle of a turbo being pushed so hard you go through 3 of them a year?

I would change the BD14 exhaust cam for a standard and get it remapped, it will be more responsive low down then which is a better match for the turbo you have.

Just to add i have ran a T4 and Greys on 2 different 205 blocks and not cracked yet.