Need advice on best way to scale

[Jim Petrosky]

A few of my friends and I are forming a REI company. We'll have $150k in cash to start. One friend thinks we should buy out first SFH in cash using roughly 2/3 - 3/4 of our seed money and buy another property once we bring in enough rent to afford to buy another house in cash. I recognize from reading this forum that that isn't an optimal approach, but I can't articulate to him and the other exactly WHY or spell out the path I recommend for scaling. I know some people like Joe V. are advocates of flipping once you double your DP, but I'm needing some taking points to convince my partners why it makes the most sense. Any help would be appreciated.