Can I run these tires?

So if I go with the Nitto's, I am going to need new back wheels. My current American Racing Outlaw 1's are 8 inch's wide with a 4 inch back spacing and they give me decent clearance on the quarter panel lip. My plan is to go to a 10 inch wheel and keep the out side of the wheel in the same spot as my current wheel. That being the case, I think I would have to go with a 6 inch back spacing. Does that sound correct?

Jack