And finally, while there are likely some pro accounts that will only give you discounts if you are licensed, most will let anyone sign up, and are often based on volume spent at that store anyways.

This halts production for anyone that is that far along - you can't just pick up trusses at your local hardware store - they are engineered for the job via the plans. 

If so, make sure to visit/know of the grocery stores, restaurants, things to do, etc around the area even if just driving by.

What if you stuck with your job making pizzas at Domino's and worked your way up to owning a store, then another, then another?

I tried using the promo code in the store, and it could not apply the promo code. 

Again, the BiggerPockets store has some books on this topic, or you can learn about it by watching podcasts, reading blogs, and interacting on the forum.

The first neighborhood I would look at is anything next to infrastructure - if it has grocery stores, malls, gas stations.

Been There Done That & got a tee shirt & don't want to waste my time. 

Two groups that I will consider investing with again are Colony Hills Capital for multi family and FNRP, which specializes in grocery and big box store anchored retail spaces.  

There are some people coming back because there's a segment of the population who love living in the city and being walking distance to restaurants, stores etc.