I wouldn't be too concerned about hurricanes blowing it down.

The warranty company denied our claim because they said corrosion in the coil caused leakage which isn’t covered.

There is a clause that basically says " any delays that are caused by the customer or any other contractor on the job resulting in loss of time or delays or damage will be billed as an additional cost to the customer at XXXX  $ per man hour plus materials .  

Another thing that I'm somewhat concerned with is the tax lien on the property, assuming I package that in to the ARV algorithm?

I’m actually reading Brandon Turner’s ‘the book on rental property investing’ and there is so much good stuff in it, I’m just concerned because it’s based in America that a lot of parts are different here in Aus! 

I would suspect that a buyer’s agent’s goal will be the sale, and will be less concerned with your long term contentment with your purchase.

I’m specifically concerned about the following:1) Compliance with state/federal regulation of investment advisers.

So if paying a heloc off on your sale reduces the net proceeds that simply means that you'll either have to take out more debt or add cash of your own to meet the purchase requirement.Whats more of a concern would be how and when you access the heloc. 

Why aren't we concerned about equity at first without down payment?

Traditional brokerages should avoid being complacent so as not to be completely blindsided, the way the hubris of other industry leaders kept them from thinking they needed to adapt and ultimately caused them to become anachronisms.