Thoughts on a getting HELOC to buy 4 SFH

I am thinking of taking out a 200k HELOC on my personal property to buy 4 or 5 SF homes to add to my portfolio . The 200k will cover the 20% down on probably 4 homes, each one will cash flow $200- 500 per month, and I would be financing the 80% balance. I am not sure I will be able to get 4 new mortgages within a year though. Do you think this is a good plan or should i use the 200k to purchase 1 sfh outright.