Tim, there's a guy making the shirts & hoodies for the SHeepshead Bay boats, and will be making he NERB tee shirts and hoodies in the next few weeks. He has a sweatshirt which is INSANELY warm and comfy, the cost was $70 (2 color silk screen front & back) and that was 2 years ago. It weighs 8#'s, and is 6 layers thick. Last winter, I didn't wear a leather jacket, instead I worse this thing. Problem is with a cost of at least $70, you're lookig at even more to retail it, and that's gonna be a tough sell.
If nothing pans out from a member on this site, I'd be glad to share teh guys info with you. I do know that there is at leat one guy in NJ who posts here with an embroidery place, who I am pretty sure can accomodate you. It's been a couple of years since I contacted him though, so I can't even remember who it is.
Whatever you do, good luck with it.