Such a thing as too much Brrrrrrrrrrr?!?!

Im currently in the refinance of a Brrrr! (woop woop!) Looking at the numbers (using the BP calculator duhh) I will have $19.91 of cash flow after all the boxes have been checked, PM, maintenance, cap ex. ect.  I need help from BP nation to justify this thin margin, knowing I can use the cash to go reinvest. Or should I not take as big a loan and sit on higher cashflow but leave equity in the deal?

Im in the season of life to where I'm scaling the business but don't feel 100% comfortable on $20 in cash flow.  I need all you cool cats and kittens to help me see my blind spots in what I may be missing and maybe some stories of why i should/shouldn't do this. 

Pros, as I see it, to take out max loan:

- More cash to invest into other properties/ money I can use for other expenses (my truck is on her last leg haha)

- Satisfaction that the refi will be tax free.

- Rents are projected to up in 2 months with lease renewal

Cons, as I see it, to not take out max loan:

- Not as leveraged

- Higher cashflow 

- Return on equity needs to be considered

God bless,

Thanks BP Nation!