Lion Stout bottles if you can find them, they are made of THICK glass, the thickest i've ever felt, and the beer is pretty decent inside as well. Feels like you could hang it on the end of a crane and go demolish a building or something.
I normally use 1 or 2 clear bottles with each brew just out of curiousity as to how it looks. If you shake one that is carbonated, you can see some bubbles come out of solution and rise up to the top.
But of course the best method, as mentioned before, is to immediately begin brewing another...
Congrats on your first brew! Sounds like its coming along nicely.
The priming sugar is usually used right at the time that you plan to bottle your brew. It's to give the yeast a little extra bit of food so that they can produce the carbonation that will be trapped inside of your then capped...