What Shift Rpm

Right now I shift at 6000, do you guys feels this is about right or? My combo is 408 magnum motor, scat forged crank, forged h-beam rods, forged 9 to 1 pistons, 501/513 288/292 roller cam, edelbrock magnum heads, m1 single plane w/750 quick fuel, paxton supercharger w/ 16lbs boost, turbo action 727 w manual valve body and 3400 stall, 391 gears and 315/60/15 m/t drag radials all in a 72 swinger