Just RGH it. For the cost of a burner that is required to burn backups and the price of dual layer DVD-R's, it's just easier (and cheaper in the long run). I'm brand new to the 360 entirely myself, and just got mine RGH'd and loving it. All the homebrew and running backups from external USB. It's the best option really.
Edit: Here's a quick RGH demo video I made. Mind you, it didn't glitch the first time I turned it on, but did on the second power on (which is normal).
RGH Demo - YouTube