Will golf cart fit?

No problem at all. I love the carts as much as I love the toy haulers. If he's thinking 72", you may just want to go 6" on the lift which shouldn't put you no more than 74". I wouldn't want to go less than 22" tires especially on 12" wheels. They start to look ricer! I love my 23s and the top speed that they afford me. You trade off some torque and thus hill climbing speed with larger tires, but they look good and really roll you down the road. I hope to upgrade to an aftermarket controller this year, but max speed on the stock controller with the 23s is 22-23 mph. With 4 of us on board, I can pull just about any hill at 12-13 mph. It was kind of fun at Ft Wilderness passing rental carts on the open road while we had 6 people on our cart. I'm not really looking for more speed, but a higher amp controller will allow me to maintain more like 16-18 mph on the hills.