1-Bookshelf speakers are a little small for that room if you are putting them on a bookshelf. Stand mounting would be much better.
2-If you are putting them on a bookshelf, go for Sat-5's instead of 5.0's. The 5.0's are rear ported and need at least several feet behind them to sound best. The sat-5's have no port. Although the sat-5 is less efficient, it still is amazing quality and has the same tweeter as most of the soliloquy models. (I should know, I have 6 for my theater).
3-Totally different sound between VA and soliloquy. Mellow vs slightly forward. A little boring vs fun. A lot will depend on your gear. Aragons(most class A amps and tube amps for that matter) will sound too soft with VA while they are a great fit with soliloquy. While most solid state gear will sound smoother through VA.