ModularGrid Rack

A beginner is looking for some advice.... I'm aiming to build a rack for ambient-like sounds, experimental, organic, (Kaitlyn Arielia Smith, Arp, Ann Annie,...) In addition to that I have a Aturia Mikrofreak.
I'm quite unsure about the sequencing and quantization abilieties and. Would be nice hear some advices. And sure this will be a growing thing... Thank you so much in advance!