Slightly off-topic - interested which looper you use, whether you currently use the octatrack as looper-synced performance sequencer?
This idea is fascinating to me, but for a long time struggling to realise an implementation with useable workflow, just decided to give up & go deeper into the 'nonlinear' (as in nonlinear editor) possibilities of boomerang looper, forgoing any sequencing possibilities.
For now, I view a 'sequencer rig' as separate project to my 'looper rig', try to have more of a composition-driven setup for my modest collection of cheapo midi synths. From a little play last night, seq64 seems most intesting in this respect (I mean the composition side of things).
As for linux distro well like many others on here I eventually gave up on debian-based distros & now do all my work on super-minimal arch linux setup running linux-RT & tiling window manager (currently dwm). Bit of a rabbit-hole I guess but works for me!