I've been doing stocks for about 3 years and have done very well, but the end goal is real estate.I want to hear your opinion on how realistic these goals are and if you have any advice that would help a ton.I’m going to use the BRRR strategy to build up the base of my portfolio the money for down payments will come from money invested in the stock market.

Whether that be installing, maintaining, or placing buds on projects.

Is it unwise of me to try to qualify for a real estate professional if I know nothing about real estate to offset 7 figures of capital gains from stock sales?

Each county maintains an online database of real estate. 

Other's are necessary to maintain the value of the house, like the gardener.But I have been advised to pay all the bills in order to keep her name from being on anything so that if it ends up in court, my case for evicting her will be easier to win.

Much of the housing stock and city infrastructure for the price range you mention is much newer the SoCal too, so property taxes should be more stable and your maintenance costs of the homes should be lower too.  

Is there any common area that should be maintained such as a lawn?

This gives them a minority share, but saves them from actually having to manage/maintain the property.  

If I needed an investor to fund the rehab can I refi out enough to make the lender whole plus interest, and maintain the original payment agreement with the seller?

From what I found, Schedule A would more appropriately be called Regulation A - essentially a mini-IPO, but maintaining private status.