For example, NY appreciates every year because their is finite supply and the demand is ever increasing (although I don't invest there because that can't be sustainable at some point!)

One more thing that I can't stress enough, the 70% rule is a guideline not a rule, and it will vary a lot based on the value of a property.So on lower priced homes you may have to get 65%, where as on higher priced homes you can make a nice profit from 75%.The same goes with demand, if your in an area that has a lot of competition to buy distressed homes, you may die waiting to get a deal at 70%, and you should expect to pay a bit more than what the 70% rule says.

From a buyer's perspective, I do have to agree with a few other comments about the lack of garage space (are 4 bedrooms in demand in this area?)

I think wholesaling can be done by some, and be a good supplement of income for others, but its not for everyone.

My goal is to work part-time and supplement the remaining income (I worked full-time prior to having my son) with rental income, and also building up my number of rental properties yearly.

As an owner of property management businesses, what kind property do you have demand for and in what areas?

Final 3 unitsAs I stated above, the increased demand is leading to higher trade prices. 

School works for some and not others.For example accumulating debt in college that you can't get rid of but you know a high paying six figure job is waiting with excellent demand and you enjoy the field it might be worth your time to finish out.If you went to school because your parents pushed you there and you have no field you enjoy or you do not like the major you are in and are racking up debt then really you are wasting time.

The demand in HUGE.

Or that there is really no demand for rentals in the area.