Can I run a 215 tire in front with a 3 1/2" back space?

Right now I have 235 14's and they are to big.
I wanted to go 205's but the Cooper don't make those, and that is what I have in the rear. I'd like to have the same tires. So I can only go with 215's.

The rims I have in front are also 7 1/2" wide. I am getting 6" wide ones with the same backspace. I think that should work?

I sure like the 7 1/2 ones though. They look nice and deep.