How would you define medium?

Price, as defined by monthly commission, is much lower on the totem pole.

With that said, I would define your niche if you haven't already to help people only in that sector.

This will help you with the money aspect.

Start your first house hack by educating yourself, defining your criteria, and getting pre-approved for a loan.

One of the critical aspects of successful property management is tenant screening.  

I'd also like to work as a contractor to work with electricians and electrical contractors as that would be relevant to my skill set in the engineering aspect.

I think the most overlooked aspect is keeping the house as an original single family residence, instead of converting into a duplex.

The Graham Leach Act defines its scope to extend to protection to individuals as opposed to "financial institutions." 

For example, I am a little concerned about some aspects of the business cycle recovery and a potential for a double-dip so I lean toward the safest part of capital stack which is debt (or low-debt equity).