I agree with red. Mirrors for sure. 32 inch tires really make it look a lot nicer and gives an additional inch of clearance, if you want to spend that money. Part of the reason I switched my tires and wheels is I also wanted to have a spare tire. At least, that was my justification

. The spare tire holder in the bed really works pretty well. Also easy to take out if you don’t want it In for some reason. If you decide to do a roof rack, you could certainly put your tire there. A nightmare is getting somewhere in the backcountry and not being able to change a tire if it gets shredded for some reason. My toolbox also has tire repair kit and pump, but occasionally that doesn’t do the trick.
In our country rock sliders are a definite must. Just too much opportunity to bang up the edges. I also like to have plenty of light at night, so I would consider a light bar. A brush guard is also something that is nice depending on where you ride. I spliced into the wire on my dome light and added one for the backseat as well. That was a pretty cheap $15 deal. For a two seater you wouldn’t need to worry about that. As far as the unseen, I would add some Silas and heat shield in the tunnel. it’s made mine noticeably quieter. It is already the quietest machine I’ve ever been in. I assume it will also make it cooler in the summer due to the coolant lines being insulated. I also made some floor mats out of stall mat. I’m sure that’s all contributed to it being quieter because you can’t hear the rocks flip up underneath on a gravel road as much.
After seeing Reds toolbox, I did an about face and copied him because I thought it looked so nice. It is great storage space and really first rate. Kind of an expensive box, but not any more than Polaris will charge when they finally get their plastic one.
Excited to see what you do! Post pics for sure!