You're best guess please.

With 9.2 compression and no blower I'd say the engine might get to 325 hp. With the somewhat modest 10 psi I'll say 525 hp. But you could easily push up the boost another 5 psi and get well into the 600s. Since this seems to be a well built engine with the right combination of parts, you could turn up the boost and it would still live. Have you considered using methanol for fuel to keep the boost air temp down and run more boost? How will you be using this engine? Can we see the car?

Are you planning on testing it somewhere? Can you find another dyno shop with a mopar bellhousing or maybe take it to the track sometime?

Regardless of how it turns out, nothing sounds as good as a roots type supercharged engine like yours!