My family owns four SFR's in Las Vegas and are currently looking for a property manager.

My electrician is working thru options but I also want to try and think creatively as well.The one advantage here is that unit 1 is currently sharing common power, and this would allow us to split it off.

Some states have source of income protections that would not allow you to decline an applicant solely based off of their participation in section 8.

The downstairs unit (1 bed/1 bath) I'm currently living in but I need to move back to Los Angeles at the end of the month.

This is my current listing which I have been 100% responsible for all aspect of:https://www.airbnb.com/rooms/782543855327164736?

I currently own a couple multi-family properties that are all LTRs and work a full time 6-figure job, so becoming an RE pro is almost impossible.

This is not to say this is the only successful method of real estate investing, but as I'm sure you're well aware, with current interest rates and overall market conditions, sourcing and acquiring LTR deals is difficult unless you're going off-market. 

Your current accountant should have the exact number that is your adjusted cost basis of the old property at their fingertips. 

I am currently full time employment in a reliable position.

Or as plan B, can I change the current lease to a month to month lease?