7 Days of patches including seriously slow LFO by Frozen Wasteland. Dual Delay (4ms clone) is a nice technique to add some Rythm.
Utilities (Kinks Clone) modulates in addition.
What you could also do:
Instead of using impromptu Clckd Module why not use Strums QuadLFO – you would get an amazing amount of modulation reccource and could leave out some of the seriously slow LFOs.
If set on a long span, modulation with Seriously slow LFO slowly modulates dual delay – setting it on hours or days would leave the modulation rather constant if you play for an hour.