Set it aside in a low risk mutual fund or even a standard savings account. 

This is standard business practice - just look up how many settlements the SEC makes annually where companies pay millions in penalties WITHOUT ADMITTING to any wrong doing.- Cash-for-Keys is another example of this!

I am an insurance broker in Colorado and can confirm that most insurance companies are increasing to minimum 8% deductibles on most condos.   

It increases housing demand and increases the need for rental properties.

Let's jump right in.The Power of Short-Term Rental Tax Strategy:Short-term rentals offer a unique opportunity to offset your W2 income with real estate losses, thanks to an increasingly popular STR tax loophole.

Instead of increasing rent, I would look at having the security deposit increased to protect against wear and tear.

The shorter the prepayment term has an impact on increasing the rate.4.

We are not allowed to say if there is an industry standard as this could be viewed as collusion.

@Kenneth Johnson, as eager as you are to get started, the best thing you can do it increase your earnings.  

I do not plan on paying interest on the HELOC for more than 2-3 months, so I guess the better question is will my portfolio benefit from acquiring a 4th property by leveraging a cash flowing LTR and therefore increasing the interest rate and lowering the cash flow on that property?