need advice on preparing for a long drive

i'm going to drive from cali to texas in about 2 weeks, and i need some pointers, etc since the farthest i've driven so far has only been from monterey to san diego.
i'm going to get my oil changed and tires rotated and balanced before i go... should i worry about checking my alignment or anything else?
eh... i haven't had my brakes checked since i got my car last year (haven't had any problems yet...)
i'm kinda worried about one of my tires too... i got a nail in it a while ago, and had it fixed by the non patch method don't know what it's called...(where they stab the thing into it and vulcanize it?)
suggestions? advice?
i think i'm worrying too much...