Hello Kimberly & Welcome to the SSWT Forum!
I like the concept - and you have a great website in the works too. Which keywords or keyword phrases do you plan to target (in regards to search engine marketing)? For example, if you chose "business travel" as your main keyword phrase, I imagine you'd want to exchange content/text-links with the sites that rank in the top ten for that phrase (checking to make sure they are spidered/crawled often - to get the maximum results).
I look forward to interacting with you here at the forum and watching things unfold as you put the finishing touches on your website & marketing plan!