I have an 03, and am in the market for a 98-07 LC. I think the advantage of the 98-02 is the possibility of a locker, if you think you need that , but air lockers are better, so keep that under consideration. The non-gps ac/radio set up is a nice thing, as the audio/video can be upgraded to anything you want. The main advantage, IMHO, is the desert beige metallic color choice. Also you can easily remove the reartail fin on top of the truck, which is nice since generally, it looks like crap.
The dash gauges are a little nicer looking on the 03-07, and the GPS can be updated, the audio cannot. The speakers can, however.
The new timing belt is a nice to have, and wouldn't be a deal maker or breaker. Not doing the water pump was a rookie move, as you have to take it off anyway to change the timing belt. I'd get more info on why it wasn't done.
Depending on the mileage, your price sounds pretty good. If it really is mint, I personally would jump on it if it meets most of your needs/expectations.
You can always sell a land cruiser very quickly (unless it is all rigged up and has a high add-on price point...in those cases it takes a bit more time usually), if it turns out its not your cup of tea, or you find something you like better. Prices are pretty stable, and if mileage is reasonable, prices won't fall much.
If you decide to wait, PM me. I may be interested in it! I am serious!