Welcome Thadar,
First of all the 1015x is a great AVR, nice choice. However, long term I would make sure you find other 1015x owners to make sure the 4ohm 80's won't be a problem. Many AVR's can't handle the 4ohm load and will go into protection mode. Generally Denon's, HK, and a few others won't have problems.
For that room, I would heavily consider the m60's as a choice also. My room is much bigger than that, at 30ft x 30ft x 9ft, and the 60's have no problem.
The 22's will do great, especially combined with a sub. I think your correct in using a Small setting with a 80hz crossover on the receiver ,and bypass on the sub crossover. Actually, that is what most of use with 60's and 80s in a 5.1 or 7.1 setup.
Are you planning on a 5.1 or 7.1 setup for the future. In my opinion, the Qs8's or Qs4's would be a better choice for the left/right surround channels. They really are hard to beat, especially compared to bookshelves. Now, you could use the 22's for the left/right rear channels, since not as much surround effects come from those channels. Also, for music the 22's would be killer for the back channels.
Talk to ya later....
