Initial lead? 408, pump gas,

408, pumpgas, EQ heads, 10.1 to 1 compression, liked 30 degrees max on the dyno. Cam is a Comp Thumpr 235/249/107 in at 105, airgap intake. It is at 14 initial now to get it back to 30 total in by 4,000. My converter flashes above 4,000. I am thinking of going to 20 initial plus 10 for 30 total to help idle and cold starts. Ideas?