That master will fix the problem. With a leaking master, you typically end up pumping air into the system as you bleed it, so you'll never get it bled. The chattering is normal until the disc is broken in. Takes most people a couple hundred miles with a street disc. A metalic disc can take thousands. DSMs with aftermarket clutches do tend to end up with a low engagement point. EVOs are typically high no matter what you do, in comparison.
On a 2g, the master has a check valve that will pump the system up as you actuate the clutch if you adjust the rod too far "out" (toward the master, to get more master travel). If you find that the pedal is pumping up, back it off just until that stops. That's the longest adjustment you'll ever be able to get away with. Most 2Gs work quite well when adjusted this way (maxed out).
If you still have that POS accumulator in the stock line, get rid of it. Odds are it's full of some milky looking HIV infected bullshit that really screws with slave travel. Replace it all with the braided line. And make sure the braided line can't rub on anything, I've blown those POSes out before and it's not fun, having driven clutchless for months myself, back in the good old days...
Sounds like you did everything else right, so I'm sure this will all be an easy fix.
