1:No..
2:Stand mounted,yes & better imaging.
3:Full range & subs,probably be easier to match everything up setting them up as small...JMO,YMMV..
Speakers, floor standing or Bookshelfs
I've been wondering, if you're to have a a pair of subwoofers does it makes sense to have full range floor standing speakers or Bookshelfs are sufficient/makes more sense?
Now, consequently, if you already have full range floor standing and a couple of Subs; do you dial the floor standing as small or large in your set up? Does it matters?