The other thing I'm kinda scared of is customizing my cockpit, since my dad bought my current bike when I was 14 and let me "grow into it." But I'm sure it doesn't really fit now, and I know handlebar designs have changed (they all have risers now and "bullhorns" are a thing of the past apparently, even though they've saved my skin (and fingers) more than once). But I'd like to take my current bike in (if I do the teardown and rebuild) and have my headset, stem, bars, etc. all custom fit so I have good geometry.
Of course I think I would get all that if/when I were to buy a new bike anyway.