Once you find an agent that knows the area and understand what you are looking to achieve, this becomes a beautiful match. 

I agree with everyone else here who highlighted the importance of staying on top of maintenance in old buildings, we achieve regular inspections through filter changes and CO2/smoke detector battery changes.

It takes the same amount of time to source and manage a 25% down payment rental as a 30% one...there is no difference between the two.Maybe you are asking if it's okay to put more money down to achieve your target cash flow. 

@Brian Gerlach is right, through education you are already ahead of the curve.House Hacking is an excellent strategy and we have helped multiple clients achieve that. 

If you can not achieve that level of financial control you will never be able to invest.

@Pat JacksonWhat others have said in regards to interest rate on the note, value of home, payment history (highly recommend using a servicer and not servicing yourself), LTV at time of sale to note investor, records of payment history, market conditions and a number of other factors are all great points.I would say that most performing Note investors are looking to achieve a 12-15% yield. 

But hey... mediocrity is your goal, who can stop you from achieving it.  

Showing her your plan on how to achieve your vision.

I strive for about that return year 1 of a single purchase and mostly have achieved it.My view is the OP either has to increase his cash flow significantly ($400/unit could work) or invest in a locale with historical appreciation that is above the inflation rate to obtain a return that is likely to be impactful to his life. 

What are you trying to achieve here?