We love hybrid campers! We almost bought a Jayco 23B and have the rather similar Rockwood Roo 23SS.
Skip the fancy mirrors and look at the
McKesh strap-ons. I bought a set sixteen (16) years ago and are using them still today. Originally on my '02 Explorer pulling our Coleman Bayside popup and then the Roo. Moved the mirrors to the '07 Expedition and now to the '17.
Once adjusted the McKesh mirrors just hook into the window channel and the strap hooks on the bottom of the door. Clean rubber pads protect the door finish and these ain't 100 point show cars anyway. Replacements are available.
These mirrors reside just inside the camper's door when not in use -- no looking around the garage or shed for them. The Equalizer draw bar resides there as well when the trailer is not in use.
I'll bet your 23B is closer to 5000 than 3500 pounds. Weight just creeps into them. I think I have a Tekonsha Prodigy brake controller just sitting here. PM me if it's of use and I'll send it. You'll need the Ford cable but that's all. Built-in controller in the '17 truck makes this surplus.
-- Chuck