1000 xmr-to-trail conversion help

….looks like a good place to start. |I’m new to the forum and new to awd quads, having lived in the socal desert environment (KTM SX 525, and ancient but potent Suzuki LT 500 Quadzilla) for very long time now. Recently retired, looking to spend time exploring high altitude Utah, Colorado 50" restricted trails. I’ve got a line on a new 2014 Outlander 1000xmr for under $10K, but not sure a mudder is transformable into the trail machine I want for reasonable $. A few specific concerns.
1) I’ve heard from a atv rental yard in Colorado that some can-ams quit running at altitudes above 10K feet, is the lean air telling the computer to shut down the machine and can it be reprogrammed to run at high altitudes? 2) The mudder shares the same frame as the touring model, if I am not mistaken. Does this mean it can be used as a "max" just by adding a second seat? 3) Air adjustable fox shocks…do I need em and will they hold up to and behave well in trail environment? 4) The machine claimed width measures 50", right at the limit for many trails, as I understand it. This is with 9" rims and the silverbacks, which I’m thinkin are probably not the best for trail riding. Most Outlanders come with 10" rims, which seems like minimal reasonable width for a 1000 cc machine. Do I need to change the rims/tires and what would work well getting traction to the ground, but without adding width to the machine which would make 50" trail riding impossible. Are there larger rims available with more offset to the "inside" of the Outlander? 5) Does the visco lok dif actually provide 4 wheel locked-up riding, or is front dif "open".

A lot of info requested here, I realize, but being a noob, there’s a lot I don’t yet know. I would appreciate any info you can provide, even if it’s "get a different machine!" I haven’t purchased it yet, so if this is the truth, I would rather learn about it now rather than an expensive later. Thanks