Looks like you're in need of a good service

If I were you, I'd get the carb and ignition set up professionally (make sure they get the auto choke right on the carb, as they're a bugger if they're not done properly).
For now though, take your can of WD40 and spray the ends of all of the HT leads from the distributor cap to the spark plugs, and from the coil to the distributor cap. Take the distributor cap off and spray inside that, and spray the arm of the distributor. While you're at it, take the spark plugs out and check that they're all in one piece. Give them a spray for good measure if you want, never know, might help
