We have the FC3. The only difference from the one Elkfitness sold is ours comes with the removable canopy that arcs over the kids head. His write up was very thorough. Did a search a bit ago and couldn't locate it.
I have a Kelty Carrier that I bought off a friend after their youngest outgrew. It's basically brand new. The wife and I are planning on getting pregnant this summer, so it'll be a while before it sees any use. We're not too far apart geographically if you want to figure something out?
I'm in the market for a hunting pack frame if you'd be interested in doing a trade for a few years?