275/45r18 on non duster anyone?

Really struggling with wheel diameter and sizes which really puts progress on my 74 swinger on hold. If I go 15's then I need to stay with 11" disc.

But if I go with 17" or 18's I will go with 13" disc, problem is tire sizes available and to minitub or not.

I really don't like the rubber band look, but want good handling and obviously with less sidewall there will be less sidewall roll.

I will be installing a Ford 8.8 that has 3.73's so I would like a 28" tire to help with highway rpms, not to mention filling up the rear opening looks good to me.

Seems like there are very few street tires 28" overall height with 275-325mm width, really nittos are one of the few.

Soooooo, is it possible to fit 275/45r18 with only a spring relocation? Really hate trying to decide, I love the 315/60r15's but those are very few to select from.

Ps
this will be only a funday street car, rarely if ever dragstrip or autocross car, but want to enjoy the ride as much as possible, and plan to have 500+rwhp eventually and don't want too limited of traction that would put me in the ditch.

Sorry for this question, as level of enjoyment is highly personal, but hate to have regrets