15mm spacers with 15x7 or 15x8 wheels with 25 offset?
 

I was wondering which will fit better on my 79 SA with 15mm wheel adapters from 4 x110 to 4x100. We have:

1. 15mm spacers with 15x7 25 offset 1.5 inch lip, or...
2. 15mm spacers with 15x8 25 offset 3 inch lip...

I would be running a complete adjustable suspension, coilovers, adjustable shocks, sway bar, etc so the stance would not be any problem at all. I want complete or close to complete flushness on my vehicle. Any help deciding will be appreciated since I'm puzzled on what rims to get for my SA. Thanks in advance!!!