At 1200 for a 5.1 speaker set, I would be looking at 5
RBH R5Bi bookshelf speakers, or 5
Philharmonic AAs, or maybe 5 of those Sony Core bookshelf speakers. For a subwoofer, I would be looking at trying to get a Hsu VTF-2 mk5 if possible. A VTF-1 wold also be good, as well a a SVS PB-1000 or Rythmik LV12r.
As for controlling zone 2 while in the pool, if your AVR has that feature, it will no doubt be controlled by a smartphone app. You will have to insure that whatever AVR you end up with can do that, however.