Seeking guidance to grow real estate portfolio - scaling flip and buy and hold

[Raj Ga]

I currently own 3 properties which include duplex and single family homes and they are under long term lease. Though I just finished my first single family home flip. I like the idea of the flip generates the cash flow that helps in reinvesting for downpayment for long term hold. For long term, I am interested in owning more long term rental properties though which requires capital to start such as down payment. I am wondering if someone have employed such strategy, doing two things in parallel - flip properties to generate cash and use that to buy long term rental or use that to do BRRR hold.

What I noticed that flip generally takes 3-6 months depending on the property, how to scale it up? How to do multiple flips at the same time? How to build multiple GC team to do them in parallel? How to build team to identity right flip candidate properties?