I havent seen any issues with Kubota loaders. They shouldn't budge if you leave 1,000lbs on them for weeks. The rear remotes & the TnT cylinders I had were crap. Cylinders didnt fit right & leaked externally. I have FitRite cylinders now. They dont leak, but the internal valves do. After a replacement valve my toplink only drops an inch in hour. My sidelink will extend all the way in an hour or 2.
No clue what the leakdown on my 3rd rear valve or 3rd function valve are. The 3rd function is for a PHD & snow plow angle. I'll never notice on the PHD & not likely to either for hydraulic angle on the SSQA mount snow plow. The side shift on my flsil mower isnt likely to have issues even if the valving sucks.
Get tires set how you want them. Mine are ser to 72" which is good stability & manuverability. Its a pain to change widths & get new impliments match. Not strictly required, but often a good idea.
Work a WSM in to the deal. Probably your first & second services, or at least supplies so you can do your own maintnance.
Makes worry in the TNT and draft control are dealer installed options after looking around my dealers shop my shop looks better equipped same with their personal toolbox. I included WSM and supplies out to and include the 200 hour maintenance, Kubota supplies are expensive.