Sure. I bought my wife, who is about the same height, a new Trek 1.2 WSD for under that amount. It's a good bike for someone starting out with road cycling. Her bike, up to that point, was a Trek city/hybrid/commuter. After she got the 1.2 WSD she l-o-v-e-s road cycling and won't touch her other bike.

Right now might actually be a good time to get '09 season bikes on sale so you could possibly get a 2.1 for that (they're usually in the $1200 range). A Trek WSD 1.5 would be somewhere in the $900-1000.00 range and a 1.2 will be about $700-800.

I would not hesitate to buy last year's model if that means you get a better bike for less cash. Most of these models don't change that much from season to season.

Still, don't settle on Trek until you've tried all available options. Best thing to do is test ride as many as you can and make sure the shop makes any adjustments (for free) to the bike for you. You want to walk out with a bike that you have no hesitations about the fit and comfort.

Regarding the extra bits after purchasing the bike - spare tubes are cheap (should be under $10). However, if you don't know how to, or intend to let a shop service change your flats, buying spare tubes beforehand is pointless. Learn to change a flat - then buy spare tubes. Otherwise, bring the bike to a shop and buy the tube and changing service (but I suggest learning how to change your tires/tubes at some point). Platform pedals (with or without toe-clips) should come with the bike unless you want clipless, then you'll need pedals and shoes but you don't need that stuff right away. Best to get used to the feel of a road bike first. You could go a whole year or two without clipless pedals. Padded shorts are a good investment but you might be able to find some inexpensive ones at REI or some other all-around outdoor shop. You're dropping $1000 on a bike - a decent shop will throw in the damn waterbottle and cage for free.

If you don't have one - get a helmet, and some front and back lights. Those are the only three things you really need to spend more money on right away. You'll go further distances on a road bike and at some point you'll get caught out in low daylight. You'll want a front and back light that will, at the very minimum, allow you to be seen by automobiles from behind and ahead. The helmet is in case they don't see you.