$10,000 (cough) $25,000

I just realized that a margin account has a requirement of $25,000. At least this is true with Scottrade, which is the broker I use. Other brokers might have different requirements.

The good news is that you don't need to maintain a $25,000 balance. You may need to borrow some money from a family member and then give it back. Be creative. I have had less than $100 in my margin account and I was able to keep it without any warnings or notices.

A slight bump in the road to get started, but a bump that can be overcome.