Great conversation, greatbasin
First of all, don't buy an expensive bike for the moment. I suggest you buy a road bike, a used and cheap one, small size, and ride it for a couple of weeks. Try out different positions and setups. I'm sure you'll love it, and then you will know what bike you want for your touring plans.
Here is an excellent thread talking about riding position, and how counter-intuitive it is to most of us Riding Position Discovery.