What is PAX? A type of paint? How does it work?
PAX is not a trademark, its an acronym for a special composition of paint.
PAX is made of
Pros-
Aide prothetics adhesive and (in the original formula) Liquite
X acrylic paint, mixed 50:50 by it's weight.
Painting results are just awesome, because this paint is water resistant and you can stay in make-up for several days.
I would always suggest to use Liquitex, because these contain less of harmful heavy metals (like Cobalt) in the blue colors - for obvious reasons you don't want such metals get into your body. Avoid all types of color with a hazard symbol.
Be careful with
white acrylic color. It contains Titanium Dioxide, which is a nanoparticle. This could be harmful as well, as it can diffuse though the skin barrier into the body.
Eh? That's PAX? Hm. I was planing on using this paint which also goes by the name "PAX" but don't look like that site.
This is exactly the paint I have used last week (because I was to lazy to mix my own formula this time

)
Well, take a look
here to see how it looks...
What I always do is get up in the middle of the night, or extremely early, and get all my painting done then. So I'm done by the time the day rolls around. It takes me about 4 hours, so I get up at 6 if I need to be ready by 10AM. I know missing sleep is annoying, but I'd rather miss sleep than anything exciting.
I am not an early bird at all, so I guess I will start to paint one day before. To me it's a miracle how fast you can paint...
EDIT: since you're using PAX you don't need to have all your paint done at once, perhaps you just be an avatar on friday, then finish the paint job, and be a Na'vi on Saturday with everyone else.
Hmm, I guess I will do all the basic blue painting one day before and do the stripes in the morning.