[MandK]

Lots of folks go in lots of different directions with that slab of concrete that Keystone calls a mattress. Everybody’s body is different, so it’s difficult to recommend a mattress. We slept on the original mattress one weekend and ordered the Wilderness RV Mattress Company’s Montana Hybrid (no relation) that week. We sleep on it about 180 nights per year and will buy it again if we change rigs. If after 3 months it’s not for you, they’ll send you your money back.
We just use a small 2500W champion to keep our batteries charged if we don’t have power. You will need more if you want/need a/c. Others can comment better on the generator.
Welcome to the forum and enjoy your new coach!
That’s a great floor plan.