It is something I am interested in doing in the future, potentially even this year, but I am curious how to put concrete numbers to this decision.  

Great tools that get updated regularly.I am on the lending side of things and would be happy to hop on a call with you anytime to discuss financial strategies and help answer any questions you may have about nearly any loan product available to help you on your journey, even if they are not products my capital partners offer.We are all here to help you learn and grow.

Also, for me 30+ bookings tend to be less profitable even though there are less vacancies.  

Class D risks > Class C > Class B > Class A, but how many investors even know what those risks are, let alone know how to account for them in their ROI calculations?

You need an income that meets three requirements:Rents increase faster than inflation to offset constantly rising prices.It must be reliable; it continues even during economic downturns.It must last throughout your lifetime.These are all long-term requirements, so the current interest rates are not the major issue.

The sponsor if they even consider allowing you would be a huge red flag for me knowing if they will accept non accredited investors what other rules are they breaking. 3.

A good, experienced borrower can turn around even an unexpectedly bad deal.

I live in Sacramento, and have noticed that people are offering either equal or above asking price even for homes that sometimes need 80-100k in repairs and I can't see how they would even make a profit doing that.

You can check tools like Niche, Roofstock, Zillow, or even just Google Maps can help you get a feel for neighborhoods and properties. 

Even if you only averaged 2.8% appreciation annually, which if you've had it 20 years I have no clue how that's true given prices have well more than doubled in that time, youre skipping over the fact that you have been benefiting from that appreciation on the ENTIRE house, not just the % you paid for.