When my youngest went to school, I changed my license status to Active, and have learned and enjoyed helping people buy/sell/invest for around 7 years now.Everyone's journey is different....you might one day no longer be a firefighter...you might move to another state....you might want to buy a house one day and having a real estate license could save you some money. 

Hard to say one way or another without knowing your personal finances, goals etc., but it seems like a good deal. 

If your cleaner doesn't offer this service, find one who does.

Additionally, we rented out a room for one year.

I also did a 1031 exchange from a different property that gave me a bunch of cash for one of these purchases. 

ADU and JADU would be more than one additional unit.

I like the fact that one and a half units pays all bills.

On 1 townhome in MN I spent $17,000 for one reroof, $7500 for a new drive way, and $10,000 for a deck replacement.

I love that you have found passion in REI and have laid down a path to success with your three approaches.Of the 3 activities you are in, do you prefer one over the others? 

One of the things I do Is I pay the monthly $20 for ChatGPT, this way I can teach it what I want, of course you have to double check it but I will have it create entire social media posting calendars as well as topcs for me to use.