I am building almost the same exact motor and should be going to the dyno within the next month. I have a cam that we are going to base line with and then custom grind a cam maybe the end of next season. This is my combo

572" Mitchell Alum block
Indy -1's 2.250 / 1.81 valves flowed 400/300 @ .800 & 409/305 @ .900
15.1 comp flat tops
single 4 on indy 3x intake
cam is .800 / .760 w/ 1.6 rockers (T&D) and 292/300 @ .050 on a 112 centerline

once I get closer to the dyno I'll post flow sheets and cam card and eventually a dyno sheet. I've had quite the long adventure with the block.