Good!
A lot of good speaker recommendations have been offered, which would be suitable for a room of that size (assuming, in some cases, that the structural improvements you are intending to make would enable several hundred pounds per speaker to be comfortably supported).
In addition to the speakers that have been mentioned, you might want to consider some of the models from
Sound Lab. One of their dealers, btw, (for the Rocky Mountain region) is Duke Lejeune of Audio Kinesis, who participates here from time to time as member Audiokinesis, and who is by all accounts a wonderful and very knowledgeable person to deal with.
Disclaimer: I have no personal experience with Sound Lab speakers, but if I were shopping in your price range, and had a room of your size, based on what I know of them they would be high on my short list.
Good luck. Regards,
-- Al