I started with the single as I did not know how this was to work out and it would give me room to move/lift the double seat out. Turned out the double did not weigh as much as I projected, so wile awkward to lift of the long/deep mounting studs it did not have much relative heft to it, note I did remove the head rests prior to lift so as to make more room incase I did the ceiling bump and shove as I was fearing I might drop the thing.
