Query and Proposal Sent

I recently sent out a query letter and a proposal to Skyhorse Publishing. Per the company's submission guidelines, I sent my usual query letter and a version of the proposal tailored to their specifications for nonfiction submissions. My proposal is about 75 pages--it took me a while to complete, but I think it's pretty good. It has capsule summaries of each chapter, a marketing plan, a few sample chapters, etc. To be honest, it was kind of a pain in the ass to do, but everyone I've talked to in publishing says a proposal is a necessity for nonfiction.

As far as Skyhorse goes, anyone out there have any experience in dealing with them? They're relatively new on the block and seem like a smaller publisher--something that looks more appropriate (and realistic) for a project like mine than the Random Houses and Simon & Schusters of the publishing world.