A stock with a beta of 1 moves up and down with the market. For growth stocks, you want high beta, beta higher than 1. You want a portfolio that contains a bunch of negatively correlated high-beta stocks. No matter what the market does, you want something soaring. You don't want companies carrying a big load of debt.
Debt service cuts into profits and hampers cash flow.
This is why you want to restrict your looking to stocks whose total debt is less than one third of the company's total assets. To do this, you need to figure a very simple number that is the best predictor of success around. To get this number you need two other numbers. This is about as complex as it is going to get, and it is not going to require anything more complicated than junior high school math. It's that simple.