Is there anything else I should know before an issue arises?

(b) If the purchaser cancels the contract as provided by Subsection (a), the seller shall, not later than the 10th day after the date the seller receives the purchaser's notice of cancellation: (1) return to the purchaser the executed contract and any property exchanged or payments made by the purchaser under the contract; and (2) cancel any security interest arising out of the contract.

However if we enter a rising interest rate environment (And we have to at some point right?

It will be beneficial if unforeseen obstacles arise and will also benefit you if you're looking to borrow money as many lenders will require proof of secure income.   

There are 27 units but we will only be doing a couple at a time as vacancies arise.

Unique issues will arise, and each time, you will be more savvy in the business for any type of property. 

In case it is, that's where the need of setting up an LLC arises.

Now, if you're the kind of agent that goes to their buyers today and says: "Realize that if regulatory challenges arise with STRs and you can't use that model then your cash-flow positive property becomes cash-flow negative."

The President's job is to fix the problems when they arise and to put us on a course that will improve this country long-term.Bush isn't much to blame for the economy leading up to Obama.

A well-written lease agreement provides resolutions for any perceived problem or one that does arise and cannot be resolved.