Can't choose between 2 turbos

I'm hoping the engine will make around 400 fwhp and then add boost from there. I'm limiting boost to no more than 14-15psi,so it might make 700 ish fwhp, fingers crossed. But then again, I might decide to stop at 600 fwhp to help it live.
My line of thought is that by adding boost, I don't need such an angry NA engine to make the power and it'll keep it nicer to drive.
And that's the way to think. I like the overall plan. It's kinda how the factory made turbocharged engines. Very mild, but powerful. Build it. It'll be fun while it lasts. But be prepared. lol