Monster 64E box. Max encoders pots and LED's?

[tonedef]

I've been putting off building a 64E box for too long. Now that I'm committed to it, I was hoping that someone could advise me as to how much I can add on a single core these days. With a LPC17 based core, can I add more I/O? Or am I still limited to 64/128 encoders/buttons? My 'minimal' setup (so far) consists of:

64 x encoders

64 x pots

64 x buttons

768 x LED's (11 for each enc. + 1 for each btn.)

1 x 2 line LCD (at least)

My optimal setup would be almost double this.

I also want a keyboard with aftertouch and velocity sensitivity. Unless I'm mistaken, I don't think I can have this on the box, but it would be nice (I have an old novation controller I want to cannibalize). Some icing on the top would be to have a 16 char (over 2 lines) lcd for each encoder and pot (or a couple of really long 2 line lcd's) for labels like on the novation SL MkII.

Basically I am trying to make a hardware controller that mimics the immediacy and detail you'd find on a traditional modular analogue synth:

http://www.doepfer.de/presse/A100_Monster_04.jpg

Thanks!!!