I'm in Milwaukee too, south side, near Wilson Park, with a 1997 fzj80. I'm far from an expert mechanic (wouldn't trust me with a pre purchase inspection for someone else), and have only had my cruiser two years, but I'd be happy to give you what help I could, as my schedule allows. It sounds like you already bought it, and the price seems pretty good unless it;s really in terrible shape. From my experience, not just with a land cruiser but vehicles in general, the biggest problem in our area is rust, look underneath, especially stuff like brake lines, gas tank etc, delving into those systems if they are all rusted up can be a much bigger hassle and maybe more costly than a lot of those mechanical problems, assuming you are going to try to do the work yourself - small projects tend to snowball. But you probably knew that already if you've lived here for a while.
I would also indirectly second Congo Cruisers recommendation for Andrew Toyota - my wife bought her Rav4 there and has had most service done there also, and has been quite happy with them overall.
Let me know if there is anything I can help you with, I don;'t visit here every day, or even every week though so please be patient if you don;t hear back right away.
Cheers, Eric