Welcome to the journey.
Try Frebreze on the cushions, it has done wonders on some of the stuff I have used it on.
I used the Allure vinyl planks in my garage (the black version) and they have held up very well. I can't remember if it is this forum that a poster used them in his TT and they looked great.
We had the absolutely worst excuse for a mattress in our camper and replaced it with a memory foam, not cheap, but comfortable. While we were at it we upgraded the bed platform to accommodate a residential sized queen bed.
We also have a futon and an air bed, we found that both gave us a good nights sleep when we have used them. So I would go the futon/airbed first to see how they work out before I when off the deep end for a new mattress.
Hope everything works out well for you.
