Quick fuel carb fuel pressure too high? Rich idle...

Noticed my voltage was dropping And giving me Ignition problems last night as my Alternator doesn’t charge very well at 800 to 1000 rpm Probably should replace the alternator as I need 12 volts plus to run the distributor and coil properly before I continue. I think that upping the idle air bleeds would help. Yes stock look to be 70’s. Maybe I should go up 4 or 6 sizes to start?