Need help on proper adjustment to carb for my 70's 250 single barrel

[mikey2409]

Hello everyone
Needs some input on adjusting my carb it a 1 barrel monojet right now I'm running it around 800 rpms at idle with a timing of 6° running rpms high during idle due to engine cutting off at times right now its running super rich from the smell in the cab at times and burning the 1/4 tank on 60mi round trip to work or around town up to a 1/8 in about 15-20mi and also deciding whether to try to find a 2bb and intake to replace the old 1 barrel and and stock intake any input on how I can get my truck running better