I am only looking to find 2-3 properties a year, anything else I would wholesale as a bonus.

FWIW an s-corp is used for running "active businesses" where a default state of the typical LLC is tax wise pass through to your personal 1040, the ideal scenario for holding rentals;  in a pass through LLC, where taxes pass through to your 1040 schedule E for rentals.Rental tax regs are actually quite simple for the Schedule E, even the newer 179, di-minimus, and bonus depreciation.  

“Anchor” is a bonus – not necessary, but great to have.

Some companies like Flyhomes offer livable wage salary and bonuses for closed deals and you should be getting anywhere from 5-15 quality leads a month.

Bonus unemployment added $300 to $600 per week, plus there will be three rounds of stimulus payments by the time mortgages come due. 

If you are going to use a box store stick to Home Depot, sign-up for a pro account and take advantage of their backend office for Pro's, it is very robust and will make your life easier. 

I recently got my salesperson license for California, and I am just doing my research for which brokers to sign up with.

But I think your on the right track being licensed is a major bonus if your going to be very active and especially if your going to flip..  

I've never had a ton of success with FB, but I was a WAY latecomer to the platform entirely, not bothering to even sign up until i had a real estate license. 

Is there a service I must sign up for?