I'd say you are right on the edge for a streeter with your numbers
You could rock the cam back a bit, lower initial timing and recurve for total, cool it down, fatten up the mixture, all with help
FWIW, I run 10.76:1 SCR in my 489 inch FE Mustang, 10:1 in my 445 FE 4x4 truck, DCR for the Mustang works out to 8.33, and the truck is 8.1, neither rattle on anything. Both have crossovers blocked. the 489 is alum head, the 445 is iron. The Mustang has a computer controlled curve, but the truck is traditional, 12 initial, 36 total, all in by 2800
The truck runs a Comp 270H, but I rocked it back to 110 ICL, seems to be very happy with no loss of torque at all.
70 Mustang, 489 FE, TKO-600, Massflo SEFI, 4.11s
71 F100 SB 4x4, 445 FE, hot rod 4x4