The room you mention is a tight squeeze for the 802D. If the room is treated properly you should be able to squeeze them in. They need power and lots of it to control the bass which is quite overwhelming to begin with. Personally I was very happy with Ayre amps with my old 803D but I know people using B&W 802D that are very happy with McIntosh and Krell.
However, given that you're moving to an even smaller room I would recommend you look elsewhere for speakers that are more comfortable in smaller enclosures. Of course, you'll have to treat that room as well.
However, given that you're moving to an even smaller room I would recommend you look elsewhere for speakers that are more comfortable in smaller enclosures. Of course, you'll have to treat that room as well.