FYI, chatted with the Dealer some more today. I had mentioned my stability concerns when shopping and they were going to move the tires out to max width, but apparently they couldn't do that with R14s and I didn't want R1s for my application. We talked it over and he's going to add 3" spacers instead which I think is frankly a better outcome than the original plan anyways.
As for the L3302, I would have bought the L2501 but none were available. The dealer is crazy close to my house and has good reviews from the locals I've talked to so for now I'm just going to go with them and what they have. It's easy to get trapped in either an analysis paralysis loop or an endless series of justifications to get something larger. I get the L3902/L3560 argument but I'm just going to roll forward and see how it goes. If it turns out I chose poorly, then given the current market it should be pretty easy to upgrade.
Sticking with the bare minimum number of attachments for now, once I know more I suspect I'll end up buying additional ones. A brush hog seems likely, possibly others.