Hey Mike, welcome, my user name is new as well (but I've been around a bit).
I'd start with the most simple inexpensive things first.
Check integrity of all wires and connections in the ignition system, not just the high voltage, but all of them, to the coil, condenser etc.
Check that the mechanical advance is not bound up. Just gently twist the rotor it should move a few degrees, maybe 10 if I recall and then smoothly spring back to it's original position.
As mentioned, check points gap and condition. Rotor and Cap as well.
If you have an old condenser around, try that one, I've gotten bogus new ones in the past that behaved much like you described.
Check timing.
Check that the choke is not bound up. (much less likely the cause though)
I'm assuming you have decent fuel in there, not really old stuff?
Good luck with it.
Steve