While I know you said that you couldn't pass along the warehouse deal because the sellers only want to deal with you, you could pass that deal on if you really wanted to, right? Couldn't you negotiate the sale and then either turn around and sell it to someone else local to the seller, or bring it back to PA and then sell it to someone else local to you?
I believe I've picked up pieces of the story over time and it's a deal you've been working a long time to complete. I'm also sure you feel a sense of loyalty to them to complete the deal but once it's complete, what's forcing you to keep the stuff? From what I've been reading it seems like you've got way more machines and parts than you can store so I'm not sure I'm following why you feel the need to keep the items you'll be getting from this deal. I assume that everything you'd be getting from the warehouse deal would eventually end up in your parts storage for future resale, correct? If that's the case, the stuff is either going to get sold now or later and if you're short on space, why not sell it now to someone else?