Sorry to hear that karlos.

A turbo for 1000 pounds sounds expensive to me - no longer a semi-budget build

I do think the 60 trim / .48 exhaust would be nearly as good as the GT28R.
(If I had the extra $$$ I would probably go with the GT28R as well.)

However, with the boost levels you run I would have a dumpvalve installed.
I know guys in the UK like the sound of turbo flutter, but that is terribly hard on turbos.
The Bosch type plumb back systems are quiet, and greatly extend turbo life, along with better spool between gear changes.

Just my opinion of course.

Keep up the good work!