timing first , then carb adjustment .after your timing is all squared away, then you can play with the carburetor. if you bounce back and forth , its like a dog chasing his tail
if it is running good , then why mess with it?
Most mopars with an RV style cam run fine with 15-20 initial. Without a vacuum gauge, it's hard to take a guess at it with a timing light. If it starts easily when hot with 30* of initial, somethig is screwey.
Verify your timing mark is in fact correct.
Find how much total (without vacuum hooked up) you have and when it's all in. Rev it up until it stops advancing. Not at some predetermined number many throw around, like 2500-3000.