Room ratios

Agree with Aball, the differences you're talking about are insubstantial. You'll be much better off paying some attention to first reflection points and some judicious room treatment.

Thanks guys!!

I'm with Arthur - just install some corner bass traps in each corner (larger the better)

When you say each corner, do you mean all four?

I would build in soffits, soffit traps, corner traps, and use a Rives PARC. Those room ratios are going to give you serious bass problems and you will probably need to electrically correct, but don't do only that. Try to reduce the problem as much as reasonably possible first.