Room size

IMHO, your room would be considered medium+, and I would consider a larger speaker.

Your room is medium sized.

A monitor will work well in that sized room. Small floorstanders will also work well. Large speakers will probably have an issue with the 14ft dimension, this is on the small end for biggish speakers.

Totem will work well, but if you want full range sound, you will need a sub of course.

My room is remarkably similar in size as yours. I consider it a major compromise in that it forces me to listen nearfield with the system under the higher ceiling height. My room is approximately 13X26 with a ceiling sloping from 14' down to 8'. I'd consider it a medium sized room. System is on the long wall. I've used both monitors and floorstanders in this room. Both can work very well, but I tend to prefer the fuller sound of floorstanders (currently using Coincident Super Eclipse III's). You need to consider the volume of the space as well, and I think this is why the larger speakers work better for me. I wouldn't go much bigger than a small to medium floorstander though. I also would be prepared to add some treatment based upon the actual room, contents, and system.