I'd say look into underarmor-type longsleeve shirts (i have a bunch of these, walmart or target brand work fine and are only like 10 dollars a shirt), i dunno if they have full leg stuff... It blocks the sun, but also keeps you pretty cool. As for your face, if the corps allows it I'd recommend a full brim hat, or you can fashion a head wrap out of a shirt (as a member this year did, earning him the nickname of "ninja pat")