gt2871 .86 or something bigger ?

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Hi !
i plan to upgrade my sr and i would like to have your ideas and concils.
i purchase a set of 740cc deatschwerks and i hesitate for the rest.

would like around 360-400whp for a street use and relatively fast spool.
My setup would be basic, fuel/air and ecu. No race manifold, intake, cam or bullet proof intern.

Now, i hesitate with the turbo and ecu.
witch of this turbo would be better for me ?
-gt2871 .86 or gt3071

Ecu: There is a guy near to us who reprograms ecu (almasi tuning) for around 400 $ cad, but i let myself try the powerfc Djetro version to upgrade to map.

Sorry for my english talking :0) i don't speak it much

So, whats you think of all that ?
to give you an idea of my setup, here my cardomain page: http://www.cardomain.com/ride/282710
thanks all