How much milled off heads to raise compression

Would the cam 512 /286
498/274 and 150 shot nitrous work well?
Specs:
360 magnum stock heads/pistons/block
Rods/crank
Edelbrock knock off rpm intake
Holley 750 double pumper
MP dizzy 36 degrees all in by 2600
3.91 rear gear
904 trans
3000?converter

off topic: I’m thinking the motor will have about 500 hp at the flywheel and the car weight is 3200- with adequate traction do you think it will dip into the 11’s