Just do it now, you won’t regret it, or install mint in a virtual machine and full screen it and get use to it, you’ll find yourself using windows less and less every day. My personal go to is Kubuntu, because I like the customization capabilities and lower memory footprint than Gnome. I hate tiling windows managers, so don’t recommend those please.
Yeah, they aren’t going to cut you a deal or show lenience that they can’t show later. Lawyer up immediately. Fuck that “we’re on your side” stuff. They are not on your side as long as they see you as a potential criminal