send the carb out to a reputable builder and they can convert it over for ya. jeff at fast does some real nice work and can get ya dialed in.
No you dont run regular jets, you have to drill the jets out with a drill bit to run alky.
Yes you should run a bigger petcock, pingle makes a real nice one. You also have to drill the vent bigger on the gas cap so it can let the tank flow more.
To purge your bike, all you have to do is pull the fuel line off the carb, hook a bottle up to the carb with some pre mix gas and start the bike. Run it till it gets real boggey and barely wants to run. then you know you have gas in your carb and engine, not alky. Also dont forget to plug the vent line and the pipe when not in use so moister does not get into the alky.
I shoot for about 175psi of compression on alky, you can also run a bunch of timing.