I've recently completed my first skiff so really just a novice myself, but if you haven't yet
I would recommend VCV rack. Especially if your interested in the mutable modules, great testing ground and its free.
Also The Befaco Rampage module is in there which could give you a better idea of what you can achieve with the Maths
(which is Awesome).
https://cdn.modulargrid.net/img/racks/modulargrid_650962.jpg