Right on JK, thanks for the plug and craft beverages are always welcome here in the Seattle office. We are supporting Expedition 7 and do offer a line of Overland specific first aid kits as well as a complete offering of medical supplies.
http://www.remotemedical.com
If you need help piecing together a kit let me know...it's what I do!
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I can speak to RMI's professionalism and quality of training. I took their Wilderness First Aid in Seattle at the REI store and really enjoyed it. Since starting to go "out there" a little more, I wanted an update on what had changed. Good class, professional instructors and their site has some great kits/building blocks and since Joel offered -- take advantage of it!!
Stay Safe!!