GR Research is an excellent start but you need the room for an open baffle to work correctly, as far as I know they are DIY unless you hire a cabinet maker plus crating and shipping a finished speaker to Canada could cost $1000.
Almost any other $10,000 full range speaker will be a compromise, the best stereo location may be the worst for bass response. I would get a pair of excellent speakers with limited but tight and fast low frequency response, the possibilities are endless. Bass will be handled by a REL S/812 which is actually a sub-bass sub handling the lowest of the lows.
The stereo speakers, because they don't have huge bass drivers, will image better than a wider baffle full range speaker and be easier to position. I use a pair of Salk HT2-TL speakers with a REL sub, the results is crystal clear (not analytical) sound, excellent imaging with tight fast bass (no bloat) down to 20 Hz.
Other members in our audiophile club use Joseph Audio or custom stand mounted speakers with dual Rythmik Audio subs with similar excellent results.