I will be keen on knowing more about the Rapidbike set up.
Yes, a Rapidbike unit is a must. Exhaust manufacturers like Akrapovic and Temignoni are snake oil salespeople. They offer fuel upmaps when on contract with Ducati such as available for Panigale's yet they say you don't need fuel map adjustment for models where Termignoni is on contract and btw, vice-versa. Real POS salesmanship IMHO.
I have kept my Rapidbike unit when I traded my Panigale. It works flawlessly. I intend to re-install it on my Multistrada eventually once I remove the exhaust valve.
The set-up is simple and Rapidbike will equip the unit with a basemap that closely matches the equipment you have on your Multi. It will then self-adjust to fine tune the fueling a few hundred miles of riding thereafter.