Keep in mind the 6% tax rate for second home/investment properties is based on a taxable value and then a local millage rate. 

Keep the bank as the mortgagee on insurance.Since you are rehabbing, you should be done in 3 to 6 months anyway.

I keep going back and forth concerning this property. 

Keeping my eye on the worst houses in the best neighbors that need some reno that I can turn into STRs or LTRs.

Personally, If I could pull out a HELOC, I would use it to fix and flip which will typically make sense as you shouldnt be keeping the money out for that long and you can recycle it or pay it back and build off the capital that you got from. the flip.

She's a beast and you'll likely get approved which will give you a revolving source of funds to keep growing Griffin what terms are you seeing on products like this? 

You defiantly want legal protection as stated by @Max Wilhite@Jonathan Bock is correct about keeping it simple. 

Keep an eye out for stuff like that.If none of that works, you’re probably in it for the long haul until they leave on their own.

That may keep things cleaner for everyone. 

Expect to keep paying.