Jets are gettin big!

I do not have NEAR the camshaft you do......But I have pretty much everything else similiar to your setup.

4777-2 650 double pumper., with Proform 750 chokeless center section
89' Roller Cam 360, gasket matched heads/intake, otherwise STOCK
True Dual Exhaust, with 340 manifolds
Weiand Single Plane X-celerator intake, no spacer....(you made no mention of which intake your DP is sitting on)
Champion 26" Aluminum Radiator......180* thermostat

My DP is jetted as follows:

72- Primary
6.5 PV
84- Secondary

My engine idles at 750/800 rpm....never gets over 195*....even in 100* heat.

My timing is set at 11 degrees intial, with 34 degress total.

My setup flat out screams....no complaints here....

Your not too far off....a Wideband o2 sensor, and some A/F tuning might be of some benefit to you.....do You have a Chassis Dyno shop anywhere close?