In CA, for commercial properties, it isn't uncommon to receive supplement taxes a year or longer after the transaction.

@Kristopher OrrDoes the loan agreement allow for a supplemental loan?

After 13 years if the rent is 3400 you are paying 93,600 to supplement payment (3400 rent but payment  4000 so 600x12monthsx13years) 440000 is mortgage owed -93600 you helped pay=$346,400 being paid by someone else after 13 years.

The new one's are pretty cheap and let you put all your properties into separate liability compartments which really supplement the insurance a lot more cost effectively than having a bunch of separate LLC's. https://www.biggerpockets.com/blog/the-traditional-llc-vs-the-series-llc-which-is-better-for-real-estate-investors/

I also intend to act as an agent but only for a handful of deals a year to supplement the rental income to purchase more properties.So before I invest the time and money, I wanted to see if there are brokers out there that would support this approach? 

I know AirGMS, Guesty, etc. does this (even for free for small accounts), however if you are like me and use a 3rd party booking provider like Evolve, you do not have access to your listings for those tools to use so this is a nice supplement for better guest experience if you are in that situation.

My goal is to acquire 10 units over the next 5 years to supplement my income.  

Why not do neither and just supplement from the savings if you need it?

I will reinvest in CA down the road most likely for the appreciation play but for now I’m trying to capitalize on the cheap money and get some rentals that I can pay off in 15 years to supplement an early retirement. 

Having a professional license will definitely help you in the long run and supplement the earnings you make in flipping houses.