@Kristen HernandezIn my opinion having a license can be very beneficial for your business.

I'd give the prospective tenant a choice, 1. one month longer than projected completion and they must vacate on that date because you will be finding a new tenant 30 days before they leave or 2. two month's extra and if there are delays for any reason you will allow them to remain until the house has a certificate of occupancy. 

We can definitely BRRRR using both the credit line and cash, but I'm wondering if there's any other strategies that would be beneficial?

A reasonable choice that someone refinancing can make.For those of you looking to buy right now, watch out for that.

My choice is TenantCloud.

Not every one I went to has been beneficial, but how would I know which one would benefit without simply making myself go?

I will need to live in my first property because I will have no other choice. 

I know it's a risk using any private lender, but what are some initial questions I can ask to get a better idea to make a choice to use one if any? 

This gave me the option to be a stay at home mom when the day comes, and makes the choice for him to stay in the marines when his time is up a real choice.

As I'm not sure whether they will close, I usually build in a safety net of one of the choices being a Delaware Statutory Trust just in case the targets fall through.