I'm ok will selling the property if it will help me acquire a better deal.

One thing I heard you say, is that you don’t need to be an agent to access the MLS, but I’m not sure I heard exactly how it is that non agents can access it.

I have recently acquired some information on multiple redeemable deeds in these counties.

Oakland County has a nice online database you can access at Oakgov.com. 

Should we look into a hard money lender and try to acquire two or more cheaper properties?

This allows you to access home ownership with some of the low down payment options while still furthering your investing goals.

You've accessed the gain through the refinances. 

The thermostat is firmly located in the living space of one unit, which means the second unit would not have control of or access to their heat source.

@Brandon LewisFor investment properties I look for several key indicators- Local businesses/restaurants/shopping centers near by- Easy access to public transportation- Proximity to local schools and the quality of those schools- Investment in the area (is the area being built up/commercialized?)

Too much unknowns for flip unless you can acquire property at a very low price.