Sleepy has very good suggestions.
In addition to, I would check to see if choke plate is closiing when cold, this would set fast idle, about 1400-1600 rpm, adjustable on pass side of carb. Then, after start-up, a choke pull-off and linkage are there on pass side, linkage may need adjustment to help maintain fast idle. The diapharm pulls the choke plate open against the spring pressure of the choke. Too much opening or not enough, will make the engine die.
Use vacuum gauge and set idle mixture screws for highest reading, depending on age/condition of engine, vacuum should be 16-20 in./H2O with stock camshaft. Reset curb idle to about 750-850 rpm.
Unplug vacuum line to distributor and set initial timing to 8-10 deg BTDC.
All this should get you in the ball park, one more thing, does it bog when you do an instant WOT? If it does, adjust the secondary return spring alittle tighter, adjustment is pass side, loosen the set screw then turn screwdriver slot CW about 1/2 turn to delay the secondaries from opening too quickly.
Alot of info to soak up, but read well and it'll work well.