Disklavier

Hi, I've been asked to write a piece for Disklavier for a music
festival in September and have a few questions.  Maybe you guys will
have some interesting ideas too... I'm a composer of classical
contemporary music that's very jazz-influenced (coming from New
Orleans).  I have a lot of MIDI files I give away too... 
http://parnasse.com/midi - of my piano compositions.  BlueStrider
(bs2.mid) and DeltaBandResonator and my preludes are all very popular.  

I'm going to be writing this piece on my Yamaha sampler and will
attempt to go to the NYC Yamaha dealer to hear it on a Disklavier
(I've talked to the sales guys before).  

So what I'm looking for outside of the obvious 16 simultaneous notes
at any time at any register... are:

1.  How fast can repeated notes be? How fast can scalar passages be?   
2.  Can the other pedals besides the sustain be controlled in a MIDI
file?  
3.  Even though it is 16 note polyphonic I assume the sustain
continues beyond 16 note polyphony?  (Kind of obvious question I know,
but I just want to be sure).  
4.  Cool effects I might not think about?  Remarkable passages in MIDI
files I might download for Disklavier? 

Any ideas or suggestions or gotchas would be appreciated.  Thanks in
advance,

Jeff Harrington
http://jeffharrington.org