I've said this before and I'll say it again, there ain't nothing better than riding dirt before you ride street...
But since that probably isn't an option here, I have to agree with Dog, you will get more out of practising on your bike than you will out of taking the safety course over and over. See if you can use your bike in the safety course. In PA they have an advanced course where you use your own bike, but I don't think you're at that point based on the info so far. Good luck, whatever you decide. And keep this thought in your head when you're riding on the street - "they don't see me and they want to kill me"...
