You also have a higher likelihood of getting approval from a local bank if you present your business model, proof of income, tenant contract and maintenance budget. 

Last resort - if they stop paying you may have to implement, "Cash-for-keys" - an expedited way to get them to move out without waiting for cook county sheriff to arrive/courts to open 6-12 months - GIVE THEM MONEY for a moving truck.

We first purchased 12 units, with a renovation budget.

I have in the past year or so taken major steps in cutting costs and budgeting to get out of the red every month, and to slowly pay down my debts. 

Of course there will always be hidden expenses, so a healthy contingency budget is a must.  10-15% contingency is recommended.From personal experience, I'd go with 15% contingency next time around. 

The 3 projects budget and timeframe was 200 million and 2 years.

If the repairs are things you do all the time and are comfortable with then thats great but if this is the first time you are working on a house I'd build a hefty cushion into your budget for errors and mess-ups.- If you are using a contractor, consider it your job to manage them, document everything in great detail that you want done and expect, and hold them accountable. 

Tell them you'll pay the  $99 and another $500 for a moving truck if they're out by ________ date. 

The 3/1 is going to get you higher rents and cost less on the rehab budget.

It's much easier for somebody to hook up their truck to the RV and move, they don't even have to move furniture.