Afraid of too much bass...

Gimme a break... Stop listening to opinions and listen to the music. You've been reading those "How big a room..." posts, haven't you? You could fit Grand Utopias in a room that size.

I agree with Onhwy61. Your room is not small and the 816V's, being 2-1/2 way floorstanders with a low point of 39hz, could turn out to be just the perfect set without a powered subwoofer for music. For HT, you may need to add a sub. I have B&W 2-1/2 way floorstanders in a room 13' x 23' x 8' with two uncloseable openings out and with my sub, they're absolutely perfect!! You know of course the bass ext produced has much to do with the CD being played. For example right now as I write this, I am playing Boney James' "Sweet Thing" CD. The sub is essentially turned off. There is so much bass in his CD's. Will you have carpeting and upholstered drapes and furniture in this room? They help with bass ext too.

Coincendentally I recently auditioned the Focal 816V's and I was extremely impressed. On par with my B&W's. I loved the mid's, detail, and soundstage they produced. Very impressed. So natural sounding with excellent balance. Why would you change them out? The highs were superb.

Hello. My room is 12 X 19, basically on a par with yours. My setup is a REL205 sub with a pair of Silverline SR15 monitors.
The REL can be easily "tuned" to integrate with the monitors, no problem there. One thing that did make a welcome addition was an ASC Sub Trap for the REL. Got it off the floor, decoupled the bass from the floor and put the sub on just a slightly lower horizontal axis from the monitors.
Really "locked" the room and presents excellent music quality at all listening levels.
I live in an apartment so I need to be careful of neighbors needs, but although I have substantial bass, it seems to have worked nicely!
Good luck with your choices and enjoy!

the room will be fine with your system

You have fine speakers with smooth highs. They are a bit finicky about placement in a room though. I would say try something other than creek amps first.