DOT for Euclidean, LL8 for more of a fixed structure, I may end up using the Burst for more Twinkly synth bits rather than percussion.
Yeah I watched that Mylar YT, Percall does look lots of fun.
Rosie looks nice for a bit of end of line Reverb to tie things together.
MixZ sounds interesting, though would obviously couple best with load of other Tiptop modules.
Enjoy your spare HP, don't rush to fill every last space, this is not like filling sticker books. Resist the urge to 'complete' your rack, its never complete so just relax.