Here are some things you might consider for drum modules:
* Sample Drum only plays 2 drum samples and is designed more for playing whole drum breaks than sequencing drums
* QD can play 4 drum samples and a lot of features that make sequencing drums easy effective
* Queen of Pentacles and LXR are even more powerful and LXR contains the engine from LXR-02

Here are some things that you might want to consider for sequencing:
* Pamela's New Workout can do Euclidean sequencing but everything is accessible through menus
* Euclidean Circles gives you the same capability but with hands-on controls (it needs an external clock, though)
* Steppy lets you do x0x style sequencing (like the LXR-02) for up to 4 channels -- use 2 if you need more drums than that. This gives you direct control over your drum sequencing instead of using Euclidean patterns (also requires an external clock)

For effects, Monsoon probably isn't what you're looking for. Granular processing can be an interesting effect on drums, but there are other effects that can be more useful. FX Aid is a good effect, but maybe not the ideal one. For example, Ghost gives you a whole suite of useful tools including delay, reverb, and compression with sidechaining. If you're not sure what you need, it will have what you need.

Something like this might be a good choice:
ModularGrid Rack