Visually, the differences may not even be very apparent, so cost to rehab homes like this can vary drastically, and it's very difficult to make any blanket assumptions on remediation costs.

Put in some extra effort and finances to ensure it has a really nice visual appeal because that tenant demographic, they expect a Ferrari for a Ford price, and if it looks the part they don't care if it's a Fiat. 

Do you have any tips on how I can visualize (if not see firsthand) the box/shelf option that does not require underpinning before doing to project?

If you like playing with maps and visuals, this is a pretty good one:https://www.richblockspoorblocks.com/

Are you someone who likes to visually be at and look at repair issue, investment or meet a tenant applicant before making a decision or are you comfortable delagating those decisions to others or making decisions with little or no info?

Maybe even some desert friendly plants/cactus to give it visual appeal - things that don't require maintenance perhaps? 

The fact is You can visually spot things in your farm area that will never be picked up by a algorithm , a list source program or an advertisement .

Its bowl-shaped theater boasts the highest-resolution wraparound LED screen, while its exterior showcases 1.2 million programmable hockey puck-sized LEDs, making it a visual marvel.

.) , road traffic counts, starting cap rate on purchase with blended cap rate over time, 1,3,5 mile population levels in a ring radius, median income households levels, income and population level growth trend's, crime stats,  is property on going to work side or going home side of road, when was property last re-imaged inside and out with the building, sightlines to property ( is it visually down in a hole or up on a hill which deters customers to patronize the business ) or is it nice and level and easily visible from the main road, parking ratio spaces for the parking lot is it ample or not enough for the tenants business model, any future road widening that would impact the parcel size of the property, access with how hard is it to get into the property such as a U-turn, does it have large back anchors for cross feeder daily traffic to the site, etc.All these things and more come into evaluating NNN properties.Hope it helps some.       

Trying to visualize the system that I will be setting up.