Ok,
To answer a few of your questions,
The 2 recommendations made are good fluids, you'll need abit over 1L to do a complete flush so ive been told. To do this, Clean the current crud out of the container, and top it up with the good stuff. You should start by flushing the longest line upto the shortest. This usually goes from back left, back right, front left, front right, after each, check container and topup.
Something that may help the bleeding process, http://www.speedbleeder.com . These can be sourced locally from the a.c.t, ill post the info tomorrow if you want as it's at work.
You may also want to invest into better pads for the track, no doubt the current 1s would have heated up and been kinda useles. Ferdo 2500/3000 are great for track, 2000 are more street. You may be able to get away with the 2500 for street without 2 much noise.
Steel braided lines will also help alot as they will not flex at all and do not absord any moisture.
I think the motul fluid goes for $50, for 1/2 L.
Since its all interlinked, youd want to flush your clutch line as well.
99% of the stuff out there is compatable, but 1 ive seen is the AP600 which warns not to use in conjunction with ure clutch as it containes certain chems. that cause a gas reaction.
hows the new rotors feel?!?!?