this comment is both from searching the forum archives and observing the actions of others plus their recommendations, and my own personal experiences.
I'm in the deep south (not east coast), and its triple digit temperatures 6 months out of the year. I don't have an AC in my Camp-Inn, and AC is still not a feature I would want. For me, going camping is about doing stuff outside, and not being cooped up in my trailer. We plan our trips for and around non-summer months. We have discovered we really enjoy winter camping, whether we take our Camp Inn 550 or are hiking+tent camping.
Hopefully one of the above suggestions from others meets your needs, but this is not an uncommon question, and frequently, the best answer may to be to sell your existing tear drop, and purchase one equipped with AC, along with any other accessory you can't live without.
All food for thought.