Crap my front tires are hitting my fenders!!!

I would have the alignment and front end checked. That 215-60-15 is the "go-to" size for people running a 15 on the front of a 67-69 Barracuda.

It should work well (but in my opinion, look a touch short).

The E70-14 that came on your car from the factory was about 25.7" tall. Even these are close (but don't rub) on my car.

Going over 26" is risky without careful wheel selection.