Do you have the vacuum advance connected to manifold vacuum or stepped vacuum?
Do you have all the A.I.R. pump and pollution stuff on the engine?
If you have the vacuum advance on stepped, the vacuum port on the passenger side of the carb, try switching it to manifold port, drivers"s side.
Having the vacuum advance connected to manifold vacuum will result in more timing at idle which will allow you to close the throttle a bit. That will give you a bit more vacuum at idle and may lower your idle temp.
If you already have the vacuum advance on the manifold port, try adding a bit more initial timing and set your carburetor idle mixture screws to the highest vacuum reading.

I've had one of those Edelbrock EPS 800s on my car since I bought it, I wired the choke open. Just switching to a Holley 4150 style carb.