I can't get my '65 falcon to idle and it won't stay cranked up below 2000 rpm....Any suggestions:

First off the 289 has had all top end work done on it:

Pro Comp alum heads (190's)
Edelbrock 600 Carb with electric choke/pressure reg set between 5 and 6.5
Crane Cam (Hydraulic with 1.6 roller rockers)
Holley Contender intake (1500-6000 rpm range)
High flow water pump
High flow fuel pump
Hedman Headers
Stock c4 tranny with B&M Shift Kit
Accel electronic distributor

here's what I have done so far:

checked the idle circuit on the carb by pushing down on the pistons to make sure the spring is ok
replaced the plugs as they were fouled
had the Felpro gaskets changed on the intake as they were the wrong ones and were allowing air to leak in

I have this car posted in the projects for those who want to see what she looks like here she is: