Marcos, the GM drum kit will only give you the two drumsets..
Actually any of the GS modules will work, but none sound better than the G1000 engine...with the exception of the VA7 used as a sound source.
The GS instruments will give you a mininum of 9 drumkits..

You may be able to disable the GM reset, and set up a performance to use as a playback for arranger or sequences..