I'd certainly get a nut crowning file as it makes life so much easier. You'll certainly need a notched straight edge, and if you don't want to make your own, you might as well buy one. It's useful for checking for back-bow in any standard guitar set-up.

I bought a diamond faced file for fret levelling (one of these http://www.chrisalsopguitar.co.uk/sh...ler-File-TF020 ). It's very fine, but still sharp enough because of the diamonds to make fret levelling a quick task.

It is a lot easier to level and profile your frets than you think. The first time I did it worked perfectly and it's worked every time since. The most time is taken in profiling the frets and polishing them so that no longitudinal scratched remain, as even a light scratch can make the string feel 'scratchy' when bending.

I've got some metal fret protectors which I use when I want to just work on the odd fret, rather than mask all the board off.