Get an after market boost guage as I have heard the original ones arent very accurate...

A boost controller would be a good investment to...but expensive!

With your spec, I would imagine anywhere between 250-270hp with a remap would be attainable!

Bluefins are fine with your spec...if you want to go down the route of a hybrid turbo or a GT28 etc, then I would get the GT28 spec BF, or go for a custom map from MSD