351W to 427 Stroker Build

Hey guys,

Been following this forum for a while and I FINALLY got a hold of an 87 GT with abou 110k miles. I've had my hands on a 84' 351W for quite some time and im starting to put together a build list. Just looking to see about how much power i'm looking at before I begin to upgrade parts I dont need to. Im coming home from a contract in Afghanistan in about 3 weeks so i'll be starting then with plenty of time on my hands. Here's a list of what I have and what I have my eyes on so far.

Ford 351W block machined & bored .40
AFR 225cc Heads

Costal High Stroker Kit (rated 800hp)
-Probe SRS Forged Pistons
-Probe Forged Steel Crankshaft
-Probe Forged 4340 H-Beam Rods

Comp Cams Hydraulic Roller Thumper Cam
Super Victor Intake
850cfm Demon Carb

Final cubic inch will be 436 and a 10.67 to 1 compression ratio.

Yeah after countless articles and forum post I figure the 302 stock block is gonna crap out around 500-550hp. But yeah it should be one hell of a weekend warrior lol. But im getting mixed numbers from the setup. I've heard anywhere from 500-700hp. Just looking for a better estimate or if somebody has a similar setup what numbers they're putting down.