I have 2 properties now one I live in but Short Term Rent it when not home which is a lot.

Currently our favorite idea is a SFH we can convert to an up down duplex by sealing off a staircase with an ADU on the property for us to live in.

Should I be budgeting significantly more sense people are in and out of the property versus them living in a long time? 

So you need to live there.

If I live a busy life and don't have the time or care to invest on my own, but want to put, lets say $200k to work, is a 15% cash flow return reasonable? 

I have lived in Santa Fe for 5 years and am plugged into the commercial RE market as a full-time investor. 

My spouse only makes about 45k pre tax and I essentially cover most of our living expenses except for groceries. 

Since costs of living depend on the area of the country, this will also influence hourly rates.Again though, Google AI can provide answers!

Just think about when you buy the house, could you and your family live here.

Many DSCR programs require an investor to have a mortgage history- there are some DSCR mortgage programs that will work with investors who are renting- some refer to them as first time home buyers (FTHBs)- DSCR loans are only for investment properties where the owner isn't living there.