@Steve Corder
I have 60 doors, 48 being multifamily and can relate to where you are now. The return on leveraged multifamily is higher and looks prettier on paper but there are pros and cons to both.
I would put the math on the back burner for a minute and look at what your goals are.
My goal was to have 50k net cash flow without being overleveraged(75%+).
I rather have 39 units paid off than 150 units leveraged. Its hard paying off a 2+ million dollar mortgage as opposed to a 100-250k mtg on a sfr.
It really boils down to where youd like to be. I have a property manager for my sfr and one for my multis so its the same amount of oversight for both. The multi take more attention obviously.
What I did was 1031 3 houses (600k) into a 40 unit.
1031 1 house into 2 duplexes side by side and another house and some capital into two side by sode quadplexes.
I will be keeping minimum 10 sfr thst are paid off. I dont care about IRR , coc , cap , dcsr bla bla at this point. Anything happens and I have cashflow and reserves to weather any market volatility or interest rate issue once refis are needed on the commercial property. I hope my point got across. English is my second language so my grammar might be a little off.