This guide is very very old.
Titanium backup, yes, still great.
And a nandroid backup from your custom recovery is all you need.
Rom Manager has been known these days to cause many issues, some serious. I'd stay away from it. ?
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Hey look... I nearly repeated me from 4 months ago. Lol ?
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You can schedule, or manually backup user apps that have changed since last backup with titanium backup. That's about as close as you've gonna get.