HI,
Forget changing the CDI. Forget the TPS sensor and just leave the wires hanging free. Fit the old or new carb. Set the idle screw 2 turns out from fully screwed in. Make sure you have good clean fuel in the tank. Make sure you have a vacuum line to the fuel tap to open it when cranking the engine. fit a vacuum line to the carb fuel pump (on the side of the carb). Connect the auto choke connector and give it a go. Use the electric starter rather than the kick start.
Good luck.