Technical 59 Chevy tire/wheel sizes

I have a 59 Chevy Bel Air and am replacing 14" wheels/tires. I have 15"x7" w/4.5" back spacing that I want to put larger tires on back. I'm considering 205/70 frt and 225/70 rear. It does have 2" lowering springs in rear. Will this work or any recommendations? Thanks a bunch!