I don't want to discourage you but if you are new (and this is an assumption) don't let too many shiny objects distract you from whatever you first goal is in this business.So if this fits into that category then full speed ahead!

IMO the whole point of an as-is sale ease and speed.

God Speed, Michael Short 

So let me see if I can throw some suggestions out but I think I have some questions.1) If your goal is to speed up the growth of your portfolio, you really have no choice but to go the BRRR method. 2) Even with the BRRR method, you're going to need some capital which is why the initial poster's suggestion above about refinancing the 3/1 makes sense. 

It's taken me a couple of months to get the apartment up to speed and now I'm running into holidays and dead of winter to find a tenant.

A tenant with an 800 credit score earning $100k/yr is a much lower risk than a tenant with a 550 score working at MacDonald's.Know the laws, processes, and requirements for serving proper notice to tenants who don't pay.Be prepared to use creative solutions such as cash for keys and early termination agreements.Have an attorney who specializes in landlord-tenant law in your state on speed dial (if not on retainer) to assist with evictions and other legal matters.Consider investing in more landlord-friendly markets. 

If you want to whistleblow to the landlord about all the issue, you are welcome to do so and just speed up the process of you all getting evicted.As a landlord I don't give a damn about your drama......

The ISD moves so slow and I want to speed this up as much as possible.

I presume stated 18 mon timeline it's probably a flip.Assuming that, you are prioritizing speed, control, convenience, and access to capital, with exceptionally strong cashflow individually.

Different parts of the country work at different speeds.