i would put socks on at first transition. one less thing to worry about when you start the run.

they have some really cool tri- suits with a padded seat so you don't have to change clothes from swim to bike.

i would treat this race as a learning ground. you will find what works for you and what doesn't. but above all:

HAVE FUN AND KICK SOME MAJOR BUTT!!!!!!

please let us know how it goes.