You only need to insure it for about a week. That's how long it will take for the shipper to get it to my house and I'll write you a check. Or cash if you don't trust me...
I don't know who you have for insurance but I would give Grundy a call www.grundy.com.
I have been with them for a long time and they are good. I got a rock chip in the windshield of the Edsel the other day. I called them yesterday morning and they simply said "Send us the bill".
I would say on the open market that car might do 15 so I would go for that if you think it will cover the replacement cost. Your labor is out the window, try to figure actual replacement cost of vehicle and parts. 15 probably won't do it. Give them a call especially if you have receipts to document costs.