Performance timing

I already checked out an article on here: Total timing. But too much arguing back and forth about timing set up? Here's what i am dealing with/ engine set up: 85 318 engine block with flat top pistons not high compression but only 9.1 compression . Short block was built by a really good machine shop and cam was degried correctly . Rest of short block is stock . Here are the cam specs: Erson cam part number
E 420121 GRIND: TQ20H
Lobe separation angle 112+4
Overlap : either 68 or 88 ? Paper faded
Intake open 38 exhaust closed 30
Intake closed 74 exhaust opens 82
Valve lift int/exh 0.449
Duration int/exh 292
Over lap -10
I bought a mopar performance distributor with performance curve vaccum can plugged off.
My questions is what is the correct time suppost to be? Do i set it at idle or does it need to be at 1000 rpm 2000,2500 or 3000 to set timing? I called mopar performance and the guy asked me what the number of the distributor is???? I told him i bought it from mancini racing and its for a small block mopar . He still wanted to know the number of distributor?? I follow Nicks Garage on youtube and asked him what the timing should be and told him what distributor i have and he wanted to know what the distributor total degree is ??? I have no clue on any of that ? I just want a basic step by step instructions on what to do ! Like start the vehicle up and let it warm up, grab a timing light etc . I have a timing light with a degree dial on it . Do i leave it at 0 ect.
You'll have to let the engine decide. Nobody can say what that will be. IF you want a general starting point, then I'll say 15* initial/35* total. But you'll have to see what your motor likes. You may end up at 20* initial/34 total. My 318 is at 20* initial/40* total. Again, nobody can say exactly what your engine will like best.