Lpc2000

Hello,

I need to move data fast between 2 I2C devices ASAP. One device is a 
PIC18F458 micro and the other is an LPC2114 micro. 

1) Is it best if I set up one as a slave and the other as master or 
it is better to set them up both as master/slave?

2) It seems to be too slow to do stop/start conditions when sending 
data. If data is going both dirrections at the same time, is there a 
way to come over start/stop condisions?

3) What address am I allowed to use on I2C? Is there legal issues on 
using sertain I2C addresses? I can only use 7-bit addressing


Thanks,

Gus