Hi Leonardf, welcome from central Ohio!
First, have you run across Jimmy-Buffett's Guide to buying or selling an FJ Cruiser
If you are in or near the rust belt, or the FJ spent time in it; compare the undersides.
Compare the trims and options, a low priced Fj may not have a feature you'd like to have. The FJ does have 2WD and 4WD versions, priced accordingly. There are a variety of options, like the compass/temp/inclinometer on the dash, keyless entry, but maybe the biggest option value-wise to look for is the A-Trac. (It'll be a button in the console below the radio) Many options can be added later this one can't. Nice to have when off pavement, or down the road if you sell.
Regarding your two, the accident could be a little thing or a major repair. Something to determine pre-purchrase. I'm not necessarily scared off by that, though 5 owners in 8 years seems more unusual. I also wouldn't be worried about 145k miles if it has been serviced well. A pre-purchase maintenance inspection will give you some insight into that too.
Many here, my self included, have gone out of state for a good deal on a great FJ. They are in demand and the best deal may also come with cool story about going to get it.
Everyone of us here at some point knew nothing about FJs, so don't worry about asking questions. I'm still learning too.
Good luck getting Your FJ, you're gonna have a blast with it!