a 235/75r17 WILL NOT FIT.
Depending on the tire, 235/65r17's on stock wheels may rub. (not all tires are the same size/fit the same). I recommend going to the 15" wheel, since you can, at the same time, get something with less back spacing, meaning the tire is pushed out a bit more from stock. This will reduce your chance of rubbing on things like the pinch weld in the back of the fender, or on the inner fender liner. To run 245/65r17's on stock wheels, I had to run 1.5" spacers... spacers are not a good idea in my opinion. and with a 15" wheel with a larger tire, you can air down a lot further, and get much better tracking on the snow.
I had the RRO lift on my 2012, and had vibration issues constantly, but I also wheeled my patriot pretty hard, so I was expecting to have to replace broken parts anyways, so it didn't reduce the longevity of my vehicle when I was already beating it up off road.