New 2016 Rzr 4-900 owner, new to site!

Hi to all.
I’m new to the site and new to the Rzr crowd. I had a Rhino several years back. I’m really impressed with the quality and even more with the ride of this machine. Rhino was a good quality machine but when it comes to the ride WOW! I have added radio, windshield, top, full enclosure, 3500 badlands winch W/ wireless remote, Polaris heater and heavy duty factory UTV skid plate. Anything you guys can tell me i might want or need? Anything I should upgrade or be aware of? Been to Royal blue and plan a Wind rock ride soon. Also looking for a really nice water tight storage for the bed if someone can lead me in the right direction. 👍