Explode

I have recently built my first LS3. Its 4.065 bore, 416 ci stroker with an 4.00 Ohio crank. I have Manley 6.125 ultra light rods, LS3 heads that have a mild port and polish on the exhaust side, hollowed valves, and JE Pistons. LS3 intake, LS7 injectors, and a Iske Cam which has at .050 lifter rise intake duration 250 Deg and exhaust duration 256 Deg. Compression is about 11:1. I am using and EZ EFI with an Stand alone XIM for the ignition.

I cant get this thing to run right lol. At 3000 rpm the motor does not build anymore power

I need advice on what I should set my:
Idle timing at
Max timing at
All-in RPM
Vacuum Advance
and my Idle at.

I have the fuel set at 42 pounds per hour and at 58 PSI.

I am sorry for all the questions but I am new to this. I think I bit off more that I could chew when building this.

I put this motor into a 1972 SS Nova.. Everyone said LS was the way to go but I am dead lost and any help would be greatly appreciated.

Thank you.