www.RadiRealEstate.com, I'd start building my link popularity as soon as possible, but you need some kind of presentable site in order to do that.
Just be careful to comply with the law. You can probably have an informational site related to Idaho real estate, but you can't peresent yourself as a real estate agent without having all your ducks in a row.
You are in a small market environment, and that likely means that you can still get good search results with some basic optimization.
Here's a multi-page document that was specifically written for real estate professionals, using real estate examples:
Search Engine Optimization Basics For Real Estate-Related Websites I hope it helps.