When you get them on the phone setup a time to do a zoom call, see how they do business, who the connections are they have, and if you get to know them through those conversations and feel good go meet them in person.

However, the person you spoke with has a good point.

If anyone is interested I have a contact person who can provide more information. 

Not sure if personal info is allowed here but look up nerdtech on youtube for some details on how it works.

@Grant Vincent Personally, I prefer to stay at a place that's 100% wood inside, no drywall and no paint, because I want it to be as dissimilar to home as possible.

There will always be more risk with something vacant, you're probably going to be counting on one person as your "eyes" on the project (or at least for "security", overall)- and the more hands on/ closer they live / able to visit site frequently, the better. whether that is your gc, a project or property manager, or your handyman/even yard maintenance guy, neighboring teenager, or whoever- this person is key

A truck is personal property and would not become yours simply because it's on a piece of real estate that you bought. 

If I made any substantial additions to it, I would be happy to share it with the community and give credit to the person who made the original.

The wifi is what will allow you to access the door remotely.If you don't want wifi on it, Then you can still get a smart lock you'll just need to pre-program several different codes into it, and then give out those codes appropriately but you'd need to be on site at the door itself to program initially or update it.From personal experience I find the touch screen or wifi locks to be complete POS's that are not reliable and the battery does not last long.  

The person you sold to would probably have a cause for legal action.However, in Austin, @T.