We just sold our 2000 Heritage Acadia. Although the Heritage series is a well built pop up the biggest complaint I had was the lack of storage inside of the camper. Was just the two of us yet there was no place to put anything without having to move things when you needed something. Sold it and went and moved up to a 2004 Jay Feather Hybrid. The Jay Feather is much roomier and still has the fold down bed ends. And the storage we now have means we can put thing out of sight and still have plenty of storage space available. Awning is much larger and easier to set up.
Refrigerator is larger. so no need for an extra ice-chest. The Acadia had an inside shower and potty but in order to use it one had to set it up and still was very cramped. If we didn't use it then we were able to keep it folded down and use the side wall as a storage area. That made the pop-up look cluttered
The pop-up has beds that had to be pulled out. We had a problem with them as the rails had plastic inserts in them to aid ir the slide operation Those pieces needed to be replaced. There are 4 pieces required and if you order them although they are inexpensive the shipping charges will scare you. They come in 12 ft lengths and therefore needed to shipped as freight. We also had to replace the gasket around the entrance door. The only other problem we had was the cable system in that one of the eyebolts snapped and had to be replaced then all 4 had to be readjusted. Easy repair just time consuming. I see the Rainer has a slide out the Acadia didn't.
Anyway enjoy your new camper and I am sure you will find a way to increase your storage space.
2004 Jay Feather 25E
2001 Ford Expedition 4X4 EB 5.4 3.55 rear
2004 Ford Expedition 4X4 EB 5.4 3.73 rear