Also, to stop by when needed as I'm over 30 miles away in LA traffic.

Next to a busy street, with a lot of traffic, the land is a Zoning LAR1 - will I be allowed to place a billboard to profit from advertising? 

. - You must have a good clean web site, a lead magnet (a form to get info from people in exchange for something cool), Facebook pixel and Google analytics at minimum. 

Amazon Web Services had a 15 hour outage last year.

Getting a lot of low balls but traffic is steady.A contractor friend has asked to buy on terms.

Guess what , these 70% of ARV deals in hot market on MLS will drive lots of traffic in the front door.  

I realize every lease is different and factors with regard to the location, traffic count etc all play a roll but I was really trying to hear about what sort of protections to the property owner was realistic to get from the billboard company.

If in that area, too, the 42/50 road construction spans many miles and impacts traffic like I've never seen before. 20-25 minute delays are common.

Also completely web-based, I find it to be a much easier platform for someone with little/no bookkeeping or accounting knowledge. 

The best chance of this working is to have a large amount of foot traffic already in the area.