Even with fairly insensitive speakers, if the listening distance is 8' or less, you probably don't even need an external amp, much less a deep breather like the Crown. For such a small room, it may make more sense to allocate the amp funds towards better speakers, rather than for power you may never actually tap into.
But they're inexpensive, and when it comes to power, too much is just enough (to avoid any clipping whatsoever). Just use caution; speakers have limits, and the Crown is powerful enough to take most to (or past) theirs.
The speakers you choose will dictate how much power you need, so as lovinthehd pointed out, worry about the speaker choice first.