Those plugs show that the engine is lean. That will happen when you have a vacum leak. Set your air/fuel mixture screws to 1 1/2 turns out. This setting will be close enough to get it running and chek for vac leaks. Leave the vac to the dist unplugged with the port on the carb plugged. As said before when its running spray something like WD 40, (but not starting fluid)around the base of the carb and the mating surfaces of the heads and manifold.. Get running enough to check for leaks before worring about setting the timing.

Did you timing chain set have the bottom gear with the 3 notches?
Even if you set it to the 4 degrees advanced or retarded it will run smooth except for the lumpity lumpity from the cam.

Tere is a post in the last couple of days that shows the lower gear.