I own the land outright and have $20k in cash to invest.

Will 300 a month for maintenance/vacancy with 150 cash flow be okay for this property?

This is in part why most of the funds would be invested into this area.Typical syndications would yield anywhere from 6-10% cash on cash annually, and 15+% IRR over the course of the holding periods.

I do believe that folks do spend to much time trying to build a core 4 when they need to build a core of cash so they can actually transact.. 

But, like everyone, we are also interested in increasing cash flow and ultimately want X amount of cash flow in 10 years so I can retire.

I am a Cash Buyer , Entrepreneur. 

On the other hand you have Cleveland which is known for its strong cash flow potential.

Northern New Mexico is the next front range of Colorado (unfortunately for locals, but fortunately for investors) this is a great appreciation market, but you will not find a Cash flowing rental unless you are willing to put in the work for an off market BRRRR.

Cash Plan to refinance when rates are more favorable How did you add value to the deal?

I paid cash for the property and am looking for an 80% LTV cash out refinance.