Buying a Model 3 in Colorado is a no brainer. The state provides a generous rebate, there are lots of Superchargers, EV's are not bothered by the mile high thin air which really kills the performance of ICE vehicles (unless supercharged or turbocharged).
Seller wants full, top of the market retail, and of course buyers are looking to go used to have a lower price than new (minus all the discounts and tax credits).
Think OP will most likely list his car for $47-48 and hope to snag all the money. Imagine if he does not get any bites he can then reduce his price to market. Failing that, he may simply keep it and forget about downgrading to a Prius.
He purchased before the end of Quarter bonus of two free options (color/wheels) and free supercharging were made available. That will be going away in a couple week, if not already. This may soak up most of the local demand, so he may need to advertise out of state to get his price.
Sounds like his car is nicely upgraded. Might help him get a buyer looking for something with those adds.