For refretting your strat, just get some of those plastic headed hammer from Bunnies instead of ordering from the states. What do you want to use the radius gauges for? If it's just for refretting and you don't plan on sanding the whole neck down then you don't really need it (if you do sand the neck down, you'll need them) If you're really tight on cash you can make your own gauges.
you don't need notched radius gauges unles you're going into business and think you'll setup tons of instruments per year. For the fret cutter and puller, you got that right, you can grind it down yourself if you want or buy stewmac's. Their stuff is good quality but again, if you're tight on cash...
For crowning and shaping the frets you can either use triangular files you'll get in a hardware store or the proper crowning files for luthier. Be prepared to spend a lot of time getting used to those triangular files before you get decent results.
For the nuts, if you want pro quality work you'll need the proper nut files.
For the electronics, I've never seen guitar pots in an electronics shop, they usually only carry that plastic pcb stuff, i'd stick with the proper ones. The wire you can buy in a local shop
Since you already invested in tons of books should I mention that stewmac dvd's are a good source of learning? The basic fretting dvd might be something interesting for you.
Where are you in Australia? I'm in Brissie