good buy?

I'm new on here, I hope this is the right place to post this, but I'm looking at buying a truck and becoming an O/O. I've been looking for a while know and I belive I found a good starter truck, I'm looking for any advice or warnings from anyone that has know better. The truck is a 99 Kenworth T600 flat top sleeper, It has a Redtop N-14 with 770,000 on it (no rebuild), new OEM eaton fuller 10 speed and new clutch, all new trailing arms and bushings, aluminum rims, and eaton 404 diffs. This was used to run fruit for a local farm for most of its life (double axle trailers not trains or antything like that) The owner is retiring and is selling it for 15,000 Please let me know if I'm on the right track and if ti sounds like a good deal.

 

I'm going to this afternoon.

 

I'm going to use it for pulling a 28ft lead trailer with molds on it, the molds weighing about 15k to 30k lbs. I don't plan on plulling coast to coast. Mostly short milk runs for local comapnies around 200 mile trips, with the ocasional out of state run maybe 1000 mile round trip. I curently do this for a mold shop but they are selling our truck so I'm going to try and pick up the slack.