Ive had several raptor etc toy haulers. Three would be nice but 5500 genset will not run three. We always placed the second in the garage and placed a small fan on the floor to push extra air into the bedroom. At night it's no problem at all.
Installing the second is is easy, less than a hour. I've always just purchased off eBay around $650 total with necessary inside non ducted controls. Put a ladder against the camper with some carpet or other for padding. Push unit up ladder on top then slide over to hole...I use cardboard for this. Tighten the four pull down rods, Hook up elect and done.
Bring your unit to my house ill help you..no charge.
2015 338RETS Eagle Premier gloss sides., king.
2012 Ram 3500, crew cab 4x4 duelly Deleted
16k miles, 530HP, 1000 +torque.