IOS 6 update available space?

I was going to update my iPhone 4, but it said I haven't got enough space available.So, I deleted tons of music, apps, and photos, and still haven't got enough space. It requires 2.5 GB of available storage. I've only got 1.1.Is it even worth deleting most of my stuff?

Just restore in itunes, it will update to ios 6, then restore off your backup to put all your stuff back on it.