Vacancy is your biggest expense as a property owner so knowing how they keep and get residents is the most important thing.

The biggest factor for me was that I was able to learn and get more insight on REI with my license.

Obviously the biggest is the expense to maintain your license.

Your biggest challange right now will be to get a good project house under contract.

I will add though, that there is always a massive tax incentive in most municipalities when rehabbing or redeveloping historic properties.

One of the biggest things my wife and I are working on is building our team.

Here is a better description: https://joefairless.com/top-lessons-from-every-best-ever-conference-2020-day-1-session/This was one of my biggest takeaways from the conference.

My biggest question is whether I have the legal ability to build a 2 car garage that can hold a campervan's height with an ADU above it, or do I need to consider 'popping the top' in some realm and keeping putting the ADU above my property. 

The two biggest benefits of turnkeys in my mind are: 1. someone else is doing all the work for you.

The biggest thing is to check your local area for their "means of egress" standard.