msa8967,
As to your question of when to bottle, while temperature is one factor, there are other things that can affect the fermentation time. For that reason, there isn't a simple answer to how long your fermentation will take.
No matter what your brewing system, your decision on when to bottle should be answered with the aid of your hydrometer. You should know what final gravity to expect from your recipe, and when you think you have reached the end of fermentation, take a hydrometer reading. If it reads within a few points of the expected final gravity, you're almost there. Wait a few days and take another hydrometer reading. If it is the same as the first reading, you should be good to go. If it has dropped some, it's best to wait a few more days, and test again.
After reaching final gravity, there are all sorts of good reasons to wait a while longer before bottling. During the next couple of weeks, the yeast will absorb diacetyl and other nasties as it settles out, making your beer taste better.
As jacketsfans said "this is a hobby that rewards patience".