Your comment about your garage being too cold, does that mean: 1) it's uncomfortable, 2) the epoxy is already a solid, or 3) parts of you might freeze and fall off.

Several years ago I was offered some prepreg panels for evaluation. The developer was saying how great they were. You don't need special storage facilities, you can stack them in your garage. You can work with them for weeks. When you are finished, just apply heat and cure them. They would not cure below 50F and they took about a week to cure at 70F.

I replied, " I live in Houston, it's 60F in my shop in Feb, the only way I can use that stuff is to rent a refrigerated truck. "oh" he replied, "I live in Minnesota, some years my basement doesn't get above 50F"