You may be under or over as the market continues to shift!

My recommendation is to not only read books, but just continue to educate yourself in anyway possible in network with others who have been doing it for a very long time.

For illustration purposes, the investor with engineering and/or construction background may excel building in a market where there is ease in doing business and can build efficiently whereas the doctor may have greater success in the established market where significant barriers already exist but can afford the entry price and can ride the waive of continued appreciation and offset their high salary by depreciating the expensive building they acquired.  

My long term investing goals are to build a portfolio and continue investing with my husband after this project.

If it sells for >$120k I'll get a good chuckle and continue being clueless about this market. 

Building out my portfolio with strategic, secure passively cash-flowing assets to continue to build leveraged equity.

In the meantime I will continue the search for a new PMC and talk to our lawyer with the intent of filing a suit since odds are it will be needed. 

DSCR loans could be a good option if you want to continue to grow your rental portfolio.

There are but we have not continued in that particular area. 

However, if you'd like to continue to grow your portfolio and use your own funds (instead of OPM), then I would tend to say take out more than the 50k in order to fund future purchases.