Tipper, having just not done what I'm going to tell you to do, I'm really not the best source of advice, but I would suggest that you don't move forward with living together until HE is begging YOU.
If you can talk to him about his hopes for the camp and let him share the details of what he'd like to have happen there, that may be enough. A theory I have about what we are here calling MLC - part of it is the testing and experimenting that many people do in their teen years, but that MLCers have for some reason missed out on, or feel they missed out on. Not all of that is done in reality, a lot of it is thinking and dreaming about different versions of the future. If you can listen to your H talk about his plans and ask questions as if it's really going to happen from a place of calm curiosity, he may be able to process it and let it go.
Now if I could only take my own advice. Sorting out my thoughts enough to post them always helps - at least now I know what my thoughts are! I'm going to have to work on this in the next while, something tells me.