69 barracuda wheel/tire combo

I have a 69 barracuda with stock SBP disk on front and SBP rear with springs in stock location. ET wheels makes a 5 spoke wheel in SBP that I'm about to pull the trigger on. I'm thinking of a 16 x 7 front wheel with 3 1/2" backspacing running a 205/60R16 tire. On the back I'm thinking of using a 16x8 with 4" backspacing running a 255/50R16 tire. Any thoughts/opinions on how this combo might fit?