Figured I'd post an update after ~11 months of owning her...
Sold the blower, plow and cab, so now I'm down to the base TLB with the mower deck. Added a fresh set of R4s from the dealership for winter duty, but I'll be swapping back to the turfs here soon since the grass has started growing. 2" wheel spacers went on out back and she's much more stable on the slopes. Found a used Ai2 hitch for cheap on eBay, so she's been pulling my 5x8 trailer around the yard. Great for picking up all the limbs and branches that come down in wind storms!
After selling the extras and buying the deck, new wheels, tires, and a new hood (original grill up front was cracked/busted), I'm into her for $11k. Can't beat that! Also stopped by the dealership today and picked up three new mower blades to have a spare set. $24 after tax for the three of them?!? Great price!
I've put 30-some hours on her thus far, and she's perfect for my use. Finally used the backhoe last week and that'll take some getting used to. Practice makes perfect though, and taking the loader and hoe on and off was easier than expected, so I might be doing that more often.