What will it make?

I've got a 528 short block that made 609 hp at 5500 and 631 lb ft at 4600. It had Pro Comp heads and the cam is a FT solid 658 in 668 ex with 256 in and 260 ex on a 111 lobe, the compression was 10.75, with a Victor intake and a 850 demon carb. I'm putting on a set of Blue Thunder heads with the raised Ford exhaust, a Comp XR 292 roller cam 292 298 254 260 .671 .678 110°, a Victor intake and a 4150 1000HP on E-85. With my heads compression is 13.3. Any guesses on approximate power numbers with my changes?

Id guess 720hp@6400 and 675tq@4800