How much power do you think I'll be able to make?

So, I have a 267 sbc I'm going to use in a 1984 Monte Carlo. How much hp and torque do you guys think I'll be able to make? I'm planning on doing 600cfm Holley 4 barrel carburetor, edelbrock intake, a mild cam, headers, double roller timing chain, comp valve springs, and maybe a few other things I can't think of right this minute. The transmission is a turbo 350 with a shift kit. But anyways, what horsepower and torque ballpark do you think I'll be looking at? I think stock the 267 was rated with 125 hp.