I've often thought if we bought a new 17B we might leave out the wardrobe and just extend the bench, it'll be great to see pictures of yours! We bought our 2005 17B used, so the build choices like that weren't ours to make. My one suggestion if you do that is to put a cabinet door on the end of that bench, so it faces you at the doorway so you can quickly tuck things like shoes inside to keep the floor clear. A lot of people have done this with the front bench that's next to the doorway in the 19s and it seems be a well loved mod.
Since you'll have more under bench space, you'll really only be losing about half to 2/3rds of the wardrobe storage space, but I think you'll be fine without it. You are definitely making a good move rotating the stove because the counter space that you're losing on top of the wardrobe is actually the easiest counter to work on in our trailer (without the stove rotation).
Hillary & Jeff
Camping with the sighthound variety pack