If it had been running OK before this started, I would start with just new plugs, plug wires, distributor cap and rotor, keeping your old distributor for now.
If you go to a Magnaspark II in the future, you’ll need the “kit” that includes all new plug wires, too, because the Magnaspark II uses a high energy cap with different wire ends than a stock VW-style distributor cap.
Anyway, if you try the first, cheaper option, drive it for a few days or a week before doing anything else to see how it seems.
The next step would be to adjust the fuel mixture screws on the carbs, but wait until you’ve driven it for a while first.
To adjust the fuel mixture, very slowly turn in one mixture screw at a time at idle (engine warmed up) until the engine stumbles slightly, then back it out 1/4 turn - it should smooth out. Repeat on the other three mixture screws.
Anything more than that gets you into the Magnaspark realm and/or having someone do a serious carburetor adjustment.