Eric,
Yes 5k was the starting price that included the engine & labor. The add-ons were on top of the $5k.
I think the 5k included the wiring and computer. You would have to double check with them to confirm.
I found my computer from a salvage yard that sold on eBay.
I hope this helps. If you plan on keeping your Toyhome for a while, its definitely worth it.
JohnJab01