HELOC for down payment

[Areeb Naseer]

Hello, 

I am just starting to invest in real estate. Rather than investing out of pocket, I am planning on getting a HELOC on my primary residence that has significant equity in it. I plan on using this as down payment for multiple properties (multi-family and single family properties). I would really appreciate any advice regarding the model I am adopting. Should I look at numbers somewhat differently than the typical 2% and 50% rules?