I've also been told by Brett, Big Sean D and also by others not on the forum that track maintenance can get very spendy once they have a considerable amount of wear!
IMO, I won't own another wheeled Skid Steer. A flat tire is essentially a stopper to any productivity. Heck, even airing it back up may be an issue if you dont have a large enough volume and pressure to deliver said air.....
Tired machines are really unstable in rooty ground, and ride like a carnival ride, absolutely will shake the fillings out of your teeth and make for a long day. Not really having any "low Ground pressure" with Tired machines either. I put ten k hours on a Kubota powered Bobcat 763, and it was work to get 2000 h on a set of tires, and thats not a cheap date either.
Undercarriage Maintenance is a function of you are going to get what you give. GREASE is king. I just replaced the front torsion axle on my RC 30, and I learned alot the hard way- I wanted to try and save the axle to put under a custom trailer, and it would have been somewhat useable for that, but getting the rails off both the front and rear axles wasn't happening, with the front stubs being bent, plus dried grease and rust, and a couple of wear rings on each stub. (1.25d x 8"l) . I cut the stubs off when I had cleared about three inches off, and the rails just slid off the rear, went back together nice. ASV patented the torsion axle application that Made Cat buy them, now everyone has a torsion axle independant suspension on their CTL's.
I plan on upping my grease-ing. The back end has a reciever, and I will make a tee bar about 2 feet long to stick in there, that will have two legs just about tall enough to touch the ground. Then when I want to grease front and rear axle/rails, I will jack the whole thing up with the bucket on the ground, rocking the rear end up onto the legs in the back, and take the pressure off the zerk and get grease in the axle socket from the top down where it needs to be. (No grease track cut into the axle stubs, just smooth and solid, seems kind of dumb?) I can use a pair of floor jacks, but this would be quicker.
While you may have said, maybe you didn't. What are you planning to do? Some grading, some firewood collecting? Then you need to consider the terrain. I see your pics of collecting wood, and I wouldn't want to run a tired machine there. you'd be spening a bit of time moving the tops and schrapnel so the ride was smoother as you collected stems. PLUS, you will NOT like hitting the stumps with one side front tire, it will give you a dark star in your shorts. The tracks are a longer "wheelbase" and give you greater stability.
Broaden your search to an ASV RC series, and even try to get a (national) rental yard sell off, if you can;t find a private owner.
I just can't help offering my 2 cents. for your remote location, and the terrain I see you flogging around in, I wouldn't buy a Tippy Tired machine, {PARTICULARLY for the punctures you might get going over stumps or blowndown. thats an immediate replacement tire, and you have no idea how not fun it is to try and drive one with three tires back to the trailer, let alone onto it.) Caterpillar can be spendy on parts, and can be hard to source AM parts, you gotta be crafty, Bobcat is slightly better on parts but equally proud.
Tell us what you are aiming to do with it?
. I hate seeing a truck/trailer going down the road either loaded heavy on the tongue or to the tail.
I'm definitely tasting your BBQ though Brett and a good taste it is. 
