Thanks for your reply.
I will be using the tr6s synced to Pams as my main drums, then sync everything else in the rack, alongside the keystep to generate patterns.
I still have the case for the West pest but I do find it very useful in the rack ie for midi cv conversion, but when the times comes for more modules it will have to go back to the case.
The disting mk 4 is the only module in the rack I'm yet to purchase, I think would be a great starting point for learning all the functions and modulations.
Do you have any more recommendations for modulation and utilities please that will compliment this rack?
Thanks again