$500,000 SFH & $200,000 Cash, 21 year old, What would you?

[Mark Sam]

Hello, I recently got a $500,000 (full equity) condo in California and $200,000 cash. I am 21, have a 751 credit score. No Job, but planning to get a Computer Science degree as a margin of safety & then use it to excel my work in real estate. 

I want to have real estate as a business around my life that can cover the expenses for my family. Whats my best plan to build my life and family. Thank you all very much.