I am no expert at all but can't agree more with Dinorrific.
I play ambient modular. Just my two cents here.
I use Maths a lot, same with Marbles and Tides mk2.
Morphagene is ace for weirdness, textures, loops.
Ambient loves looping delays as well, you got one in Clouds but maybe check out 4ms DLD or Magneto.
I loop lots of stuff into the DLD, with sound on sound technique, great for long evolving pads for instance.
Magneto has this wow and flutter thing that I absolutely love, it can loop and sample, pichtshift, there's even some shimmer into it.
You need VCA's as well. And a mixer.
Have you some examples of modular artists that you like ? Some YT links ? It might help.