Living in one might affect the rules too. 

Does anyone know the rules or limitations concerning keeping your homestead exemption and the rules about your taxes when you have declared it as a rental property?

The general rule of thumb is the 1% Rule which says you should bring in at least 1% of the value of the property per month.

Not understanding and following the rules can cost you greatly.

Will your identified markets be an easy or difficult area to sell once it’s time?

It's so easy to Google anything and find information on anything including YouTube videos.Many newbies on here struggle with the search function which usually reveals a wealth of information on most any RE related topic.

We follow Airbnb rules in Colorado.

Similar to that, it's just as easy to work with an out of state CPA. 

We think some of the easy money has definitely already been made, and we spoke with many people who said they were pruning and optimizing their portfolios, while also reevaluating what they buy and where they buy.

Collections and damages are easy to handle.