k12573n

#4 is a pretty popular font. I like #1 the best because there is an element of mystery.

#2 or #4 would probably work best for the scale you're going to use, I'm not too sure how the others would turn out, especially when you consider the bleeding colours over time. (with luck the colour won't bleed out too much, but I've seen some horrid tattoos that have bled out to the point that they're a fuzzy mess).

Also, school isn't good. It sucks!

Learning is the fun bit.