i also remap caps -> ctrl, but have bindings for `fj` & `jf` in insert mode to exit back to normal mode, on the theory that you basically never have to type either of those letter combos (it has come up maybe twice in the five years i've had it set up). and even if you do have to type one of those letter combos, all you have to do is wait for ~half second between keystrokes and it works fine.
Ideally, yes. I don't recall all the details -- I typically run fairly lightweight in terms of vim customizations as I'm often multiple SSH sessions deep, sometimes on systems with vi but no vim (they exist!), so automatic pastetoggle is usually off the table regardless.
