+1
You'll get nowhere build anything that can be readily available by any manufacturer. Build something unique.
I only accept truly custom guitars. Even if the shape is something like a Tele, there has to be something about the design that you can't get anywhere else and I'm talking about more than the type of wood used.
The last custom build, I backed out. I refunded the deposit because the guy kept changing his mind on level of completeness, parts procurement, kept wanting to change certain things (i.e. trem, no trem, finish, color etc), kept wanting to drive the price down and wanted the guitar quickly. It takes a LOT of time when you have to constantly reprice stuff and change things around. from now on, the spec sheet is not modifiable after work has started. It only takes one semi-bad experience to learn this.
One word of advice - do the best work you can and never work for nothing. If someone lowballs you, tell them to look elsewhere.
in terms of selling, the approach I'm taking for the next couple of builds is consignment at a good local retailer but the best way in my opinion is to have someone commission a guitar.
Consignment can create interest in your guitars but you won't get as much money this way.