Welcome to the world of RV sewing!
My husband is a semi-pro racer, so we are on the road most of the summer. I have a brother 500-d that fits perfectly in a closet compartment. I have a quilters tote that holds rulers, cutting implements, etc. I have a few small totes that have "kits" I make up to take with me. I usually take 7 to 8 as I get bored with one I can work on another.
i used the ironing board from MSQC ( 24x24 board wrapped in toweling and wraped in a custom fabric "pillowcase") on the counter.
Of course, I always keep a place available because you have to get fabric while on the road.