While this will work in the long run and we will be successful in the long run , I would like to use wholesaling to earn cash faster so that I can roll that into more long term rentals, and reach our passive income goals faster.

I've read some analysis that says that at least in SoCal, Uber drivers earn around the equivalent of $20/hr (Michigan may be less, IDK), though it varies.

Buy where there is a good spread, if we have an oil cycle, then I'll sell high and move my earnings to a more stable market via 1031

If it costs you $0.70 per customer (buying the list, sending the mailer, postage, etc.) then you can expect to spend $700 to earn $10,000 and your net profit without any of your own labor cost is $9,300.  

Instead of marking up 20%, you should be doing [cost]/(1-0.20) to get your price to your customer in order to earn 20% margin.

One of my favorite quotes that my Dad would always tell me was "If it's easy it isn't worth doing" I have always followed that advice UNTIL I read "Rich Dad Poor Dad" and realized that I don't need to work to exhaustion to earn more money.

I am currently earning steady W2 income through my engineering career and try to live below my means while still enjoying life.  

Readers here should be well aware of of the benefits afforded to real estate that effectively shield all earnings from taxes in the early years of a new property.And finally, tax-free distributions through refinancing.............for these and many other reasons real estate should be a meaningful portion of most anyone's investment portfolio.

I started looking at the 40-50k homes but now I'm wondering, since I've had good luck with a 'higher earning' tenants thus far, if I should I focus there. 

Personally, I earn many hundreds of dollars an hour by finding new deals and raising money...