spark plug heat range questions.

ya , i have it back on ported vaccum and am leaving it there, i'm done trying to get it to idle right on manifold vaccum. I am running 14 degrees of initial timing 32 degrees total timing with my vaccum advance set to add 12 degrees of timing at 18 inches of vaccum and the vaccum advance is on ported vaccum now. I am running the 4 pin chrysler electronic ignition, i have a wells 4 pin module and a 1 ohm 2 prong wells ballast resistor and i am running a crane cams lx91 ignition coil, its an ele coil i belive that can be ran with cd or inductive ignition. I am now running the autolite 3923 plugs gapped at .035. I will eventually go to the ngk v-power zfr6f11's when i get the money. But for now i will run the autolites, i must say the engine feels more responsive with the 1 step colder spark plugs. Must be because i have a fairly high initial timing setting and i'm running 91 octane fuel.
But i am leaving it alone, i think i have it tuned as well as it can be with what i have. I have my idle air mixture screws set to the highest vaccum reading with my vaccum gauge and i have the edelbrock performer 600cfm manual choke carburetor. I am running .092 jets on the primary side, and .092 jets in the secondary side. And i am running 7047 metering rods and the silver step up springs. I have the accelerator pump linkage in the middle hole. I have triple checked my float level and it is spot on.
future plans for ignition is ether a craner cams hi-6 cd ignition or a mallory hyfire cd ignition.