Funny that you posted this - I just made BM's centennial two weeks ago and used Notty yeast. It's kind of tough to see in this picture, but I think that's what I'm seeing in my beer. It looks like clumps of yeast that haven't settled yet. I've never had this in my beer, although this is only my 4th batch, so I hope it's not an infection. I'll post a pic when I get home.
As far as when to bottle, I would say to wait another week and then if you have a hydrometer, get a gravity reading. Wait a few days and take another reading. You probably want to get two or three consistent gravity readings before bottling. When it comes to the duration of your wort in primary fermentation, time isn't as important a factor as the hydrometer readings.