We don't have this particular trailer but just to comment on the bunks... i really like double over double. The single bunks are SO narrow - I wouldn't like sleeping on it myself and I'm only 5'3". My kids are young (5, 2 and 1) and I would not have felt comfortable putting them on a single bunk. In our trailer I think the doubles are standard and they are only open at the ends, not the sides, so I am far less worried about them falling out.
Our TV is also basically perpendicular to the couch. It doesn't seem to bother the kids but we really only turn the TV on when we need to keep them occupied for a little while (eg set up, take down, one of us is cooking and one is showering or something)
as for storing clothing, I use the cupboard closest to the bathroom for my kids clothes. Right now I have 3 cube boxes from Ikea stacked up like shelving, each kid gets a box, and I fold their jackets on top.