Welcome and congrats on the new machine!
For me, I rarely even use the front winch, so I don’t need a rear one. I guess it depends on how you typically ride and your normal terrain.
Must have tools for me are:
Tire Plug kit and sidewall patch kit.
Cordless tire inflator. (I use a Makita 18v compressor)
Spare cvt belt
Basic tool kit. (They come with very basic tools for belt change and such, but it’s better to have a little more comprehensive set, like the Assault or SATV Tool roll)
Spare Fuses/Fuse Breakers. (I’ve seen multiple cooling fan breakers fail on these machines)
And a Jump Pack. (I use the Anti-Gravity Micro 10 jump pack. I’ve needed it several times myself, and a ton of times to help others)
