It's a 15 minute drive from the main highway (i.e. not the most RV friendly drive).

I have searched the web to find some paid subscriptions like Monarch or YNAB or Empower.

Until builders can catch up and create millions of homes, I think we will continue to see huge increases in sales prices, however, the lack of sellers means numbers in terms of how many houses sold will continue to go down driving prices up even higher

I flew out there and did drive around the neighborhoods - they look much different in person than in photos and video tours (I do know a few CA investors who buy sight unseen in multiple states but I think their risk tolerance is higher than mine).   

That's like JFK asking if this is a good day for a drive. 

I’d love to hear what drives your choice!

At the time I was having about 10 hours/month of property management I was doing but most of this was 2 hours per week driving around to visit my properties and make sure they were all in good shape and didn’t need any external maintenance.

I've built a system where I can drag/drop any bill into a Google Drive folder, and I have some systems set up to split the bill evenly among tenants, automatically bill my tenants, and even send them an email with the breakdown. 

Also, is there some prevision I can put in the lease to prevent the tenant from blocking the drive access to the ADU/Boat and from physically messing with my stuff, such as a fee.

But one of the best resources I've found is just reading, and listening to, as many books on the subject as I could find to really help deepen my knowledge and expertise.I actually just started listing to audio books over the last year or so and found a great app called Libby, that you can download for free through the Cleveland Public Library system and there's tons of great audiobooks on real estate and investing that I listen to when I'm driving and has helped me a lot!