This prevents me from hearing last minute sob stories, it looks more professional and it helps in preventing me from getting screwed by professional tenants.  

Put the safety pin back in that prevents accidental discharge. 

Which I’m assuming will prevent me from wholesaling the contract.

If the unit has been inspected, but not deleaded, you also cannot do any construction or remodeling in the unit, they consider that unauthorized deleading and it will prevent you from ever getting a lead cert.

Keep tabs of your rentals and perform preventative maintenance.

Is there something specific in the contract that I should look out for that’s would prevent me from assigning my rights?

It could be the rules in the area that prevent it from being a STR.

@Nathan G. All

This prevents the tenant from returning the letter the day before move-out.Learn to communicate clearly and professionally, and always try to keep it in writing.

This will help you prevent some mistakes new flippers commonly make.