Sounds like you've got your mind right... You'll never be able to sell it for more than half what you've got into it. And all your labor? HA!
You're building what you want for you. It's a labor of love all the way.
We're not alone in this however. I was at a car show and saw a T bucket for sale for $12,000. It was a work of art. He had over $30,000. Into it and every weekend for the last 5 years.