Tesla Motors Club

Right now, going through a lot of mixed feelings. After a home, this is the biggest purchase I would be making and the probably the biggest I will ever make on an automobile. My biggest concern is buyer's remorse, mainly due to the cost. This is somewhat affordable ($400 more than what I used to pay for 2 cars!) but I'm locked for the next 7 years (I don't have payments right now).

I will be coming from a 8 year old Prius.

Here is my config

Model S 60
Deep Blue Metallic Paint
All Glass Panoramic Roof
Matte Obeche Wood Decor
Grey Next Generation Seats
Autopilot Convenience Features
Premium Upgrades Package
Smart Air Suspension

Your feedback is much appreciated.

If I buy, my intention would be to keep the car for the next 8-10 years. However, it would be nice to have the option to get a newer model, especially given Tesla's track record of changing things up frequently.

What are your thoughts on Model S' value in the future? Would Model 3 cannibalize S?

Also, how does the ordering process go? If I place an order today, do I get to pick a delivery date? Do I get to change the design? Is it better to go to the Tesla Store and have a DS advise through the design process?

Sorry for asking so many questions in a single post

Thanks!