Yes a 23 foot camper cover like the part # 052963792638 that you referenced would work great on your 2020 Coachmen Orion that you measured at 23.75 feet including the ladder. When picking out a storage cover you would want to measure the length of the motorhome excluding the ladder which means this cover would match up well to your motorhome. view full answer...
The use of a hitch adapter such as the Brophy Hitch Expander part # HTAD or part # HT5R will reduce the trailer hitch's capacity by 50%. Therefore, your new weight capacity is 100 lbs if using either of the above. The Curt Trailer Hitch Mounted Spare Tire Carrier part # c31006 weighs around 15 lbs therefore so long as the weight of your spare wheel/tire does not exceed 85 lbs then you will be okay to go ahead with this.
That said, I really don't see any other option to carry a spare wheel/tire... view full answer...