The cash flow (or actually the net income before taxes) from the property (doesn't matter whether it is a single family or multi) should have a DSCR (debt-service-coverage-ratio) of at least 1.20 or more.

Obviously, I don't have insight into your full financial situation, but I would have concerns from a risk management perspective about putting all of your hard-earned savings into purchasing a single property or even a single investment of any type. 

Does Market Leader provides Quality Leads Service? 

I hope this helps, it's always nice to be able to assist another service member; I sent you a DM on BP -- if you are able to assist I would greatly appreciate it. 

The previous Owner’s property management reached out to us if we would continue with their services.

Full disclosure: I'm a licensed broker but don't actively sell any RE.

New roof, new well, new septic, full gut renovation on two of the three bathrooms, new kitchen (cabinets, appliances, fixtures, counters), new exterior doors, and solid oak floors throughout.

I own a PM Co that specializes in full service meaning we market/price/book the property, communicate with the guests, manage housekeeping, and manage maintenance.  

Ultimately, the best approach depends on factors like the size and complexity of your operation, your comfort level with HR tasks, and the services offered by the property management company.

Usually full retail or a little more than full retail.