#2 - Look through
this thread and see if you find what you're looking for. Also, if you know the name of the tile you're installing, you can plug it into the Advanced search feature and possibly find it somewhere on our site.
#3 - Yes, except that you could end up at the other end with some tiny little pieces that are almost impossible to cut. I might lay out the tile on the floor or countertop if possible and see how large the cuts are going to be at each end and plan accordingly. You could start at either end and work toward the middle, but your pieces won't match up, if that's important to you.
#4 - Go with the middle one. Hard to go wrong with that.