That's a great yeast. I usually ferment it at 62-64 for my IPAs and it gives a nice, clean, neutral flavor that allows the hops and other ingredients to shine through. I think your temp should be fine, especially since it sounds like you got a decent krausen out of it. That means you must have been doing something right. Warming it up at this point won't hurt anything, but I wouldn't bother.
The party line for bottling is to wait until you've hit FG. You'll know that because two different hydrometer readings taken a couple days apart give the same value.
However, if you're like me and keep breaking your hydrometer(s), just wait until the krausen falls, give it another 4-7 days, and call it good. Certainly by the 3 week point you'll be fine.
I also find the pitch rate recommendations on the vial are slightly optimistic. So I think whole vial into 2.5 gal was just fine. You can check out the calculator at mrmalty.com to double check.