Cameo LXI 33' 2005 /2nd AC

[KaseyCarriage]

Hi!
We are looking to add a 2nd AC unit in the bedroom roof spot. Took the vent cover off and noticed no ducts but the wiring is there, I assume for circuit breaker. Looks like a wooden frame, also assuming the ducts are not behind somewhere? Looking at the pros and cons of going with a non-ducted roof system OR a portable AC unit. Price IS a consideration right now. We are realitively new to all of this any insight would be appreciated!

Thanks Kasey