Tire Size Opinions

I have this, that, (pics below), 3.23 Sure-Grip.

Currently have:
Front - 215/70R14 on 14x5, or x6 not sure
Rear - 245/60R14 on 14x7

I have a set of sbp 15x7 that I would really like to use.

Any input on tire sizes is appreciated, front and back, tires ain't cheap, inspection soon, and these baloney skins aren't passing.

I hear going to say a larger rim/tire in the rear would be best suited to a 3.55 rear, I think, but that's not in the budget.

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Love the news the taller the tire and as wide as you can get will bite the hardest