I hope you like yours as much as I do mine. I've got a 7600, 7610, and a 7710 (all very similar). The 7710 I have is a real work horse, had it for 4 years now. I put twice as many hours on it as the other 2 7XXX tractors and my other 3 tractors combined. Planning to sell 1 each of the non 7XXX tractors each year and replace with 7XXX series. That way I can afford to inventory a lot more parts like water pumps, clutches, etc. (I know I am going to buy a water pump, clutch, and rear tire every year, now I don't know for which unit (have since every year since 1984))
Nothing especially Mickey Mouse about any of the systems. Economical parts and easy to work on. My 7710 works almost every day. Can't speak to plowing, I haven't used a set in 5 years. Only real 'weaknesses' I have seen are 1. the a/c and heat are a little under powered, especially with R134a, 2. front axle is prone to fatigue cracks at the bolt holes but I do a lot of loader work (I scabbed a piece of rail car spring over the front of the axle to reinforce. Clutch failure was the only real problem (and all clutches fail eventually), it ripped the hub completely out of the clutch disc. I had one custom built with a solid slab steel core.