EXS 24 Logic Sampler Users Group

I''ll  be coming over to Logic when 6.0 is released and I have a 
question about layering softsynths/samplers in Logic 6. Let's say I 
want to layer three EXS24 mk II, two Atmospheres and one ES2 so that 
when I played my controller I would trigger all three synths. I know 
how to set this up in DP3 and I assume I would set up Logic this way:

Audio Track 1 - EXS24 (Strings)		
Audio Track 2 - EXS24 (Piano)			
Audio Track 3 - EXS24 (EPiano)		
Audio Track 4 - Atmosphere (PAD)
Audio Track 5 - Atmosphere (Strings)
Audio Track 6 - ES2 (Drone)

MIDI Track 1 - EXS24 #1 (MIDI Channel 1)
MIDI Track 2 - EXS24 #2 (MIDI Channel 1)
MIDI Track 3 - EXS24 #3 (MIDI Channel 1)
MIDI Track 4 - Atmosphere #1 (MIDI Channel 1)
MIDI Track 5 - Atmosphere #2 (MIDI Channel 1)
MIDI Track 6 - ES2 #1 (MIDI Channel 1)

Since I've never used Logic I'm purely guessing here. Am I close??? In 
DP3 you can also set up the same situation but only need one MIDI track 
by setting up a "Devise Group".  You can set up as many Devise Groups 
as you like and give them each different names. Each Devise Group can 
have different numbers of softsynths/samplers in it. Anything like this 
in Logic?

Thanks