I see in your profile that you may reside in NC, which is not a community property state. 

Sell and cash in on the equity? 

I’m also using a 6% vacancy rate, which brings the net monthly cash flow to about $200 and a CoC return of 13.06%.Summary:I’ve created around $50k in equity (difference between ARV of $200k and total investment of $155k).I’ve got about $10k or $18,385 left in the deal (factoring in closing costs).The cash flow is healthy, and the CoC return is strong, especially as a first-time investor.Questions:Does anything look off or could I improve the numbers?

Investment Info:Single-family residence buy & hold investment.

If you put down 25%, that's equity, but it's also trapped - you can't use it for anything else.  

@Aristotle KumpisPossible yes likely no unless you have a ton of equity in other deals that can be cross collateralized

The last few STR deals I closed where my client used a second home loan, they ended up putting down 20-25%, preferring to have more equity in the property versus giving away thousands in fees to the lender. 

I am sorry you got burned by a bad resident. 

So, the extra unit may cost you more then it brings if you cannot access equity or if the market discounts the property when you go to sell due to financing available.

You could tap the $400k of equity in your primary, but that's a slippery slope with the little financial discipline you appear to have and could quickly lead to bankruptcy.