How much power do you have dude???
Where do you get your information? Why do the fronts have to be a 7??? Why?
Do you have rims already or are you buying some?
If you’re buying some, just get some 7.5’s or 8’s.
An 8 inch with a 225 in the front and and 9 or a 9.5 in the rear with a 245 or a 255.