Another 67 camaro wheel and tire question

[Duramaxpower09]

Ok guys I know this has been posted a bunch on here over time but can someone help me out I have a 67 camaro that has been mini tubbed with factory tubs not dse tubs they were cut to the same width as the dse ones I just wanted to keep a somewhat factory look I have the quadralink kit from dse but I am running shockwaves with it instead of dse coilovers with full air ride I have a 12 bolt rear that I will be narrowing to fit the wheels I want to run 19x12s with a big lip and 335s I will be rolling the back fender lip as well does anyone have a good backspace that I should use to get a deep lip it's going to be a full show car so it won't be abused on the track lol thanks