Hello again ModularGridders and Fellow Wigglers,

I recently had a major itch for some trance and the hate-it or love-it supersaw sound so i bought a Acid Rain Chainsaw!
but foolishly realized after, i don't have a proper standalone envelope generators and a VCA (oh the humanity!) as well a nice stereo filter and sequencer that can handle at least 3 separate V/Oct. I've been spoiled by the Intellijel Atlantis having everything built in, so i focused on other modules to add but now its finally come back to haunt me. I know the infamous saying "You can never have enough VCAs" so i did end up buying a Mutable Instruments Veils a while ago just in case but I feel i limited myself with that one in terms of modulation sources. I also technically have and EG in the form of MI's Peaks but its been my dedicated bass drum/snare.

Envelope Generator :
Is it finally time to buy a MATHS? its a Swiss army knife in itself but if I'm just using it as a dual EG is that overkill? Quadrax and Stages (although pricey) seem to be nice options as well. I do favor versatility which is why I'm not just going for standard Doepfer, not to say the father of eurorack doesn't make great modules, he definitely does.

VCA:
For a VCA, I'm stuck because the Chainsaw has a Stereo output and none of the modules i own expect the Ujack has stereo inputs. My only mixer is a ABC from Bastl and only true VCA is Veils, so for bringing the chainsaw into my patch with my other voices I'm a little lost. If anything I don't mind going mono to make my life easier.

Filter:
I was initially going to use the external input on the Atlantis but once again due the the stereo outputs I'm having a second opinion, I'd like to use this as an excuse to buy the Morgasmatron because the MS-20 filter is my all time favorite but it takes up a big chunk of HP and is pretty expensive. Alternatives have been Happy Nerding's MMM VCF (no Canadian retailers, boo!), MI Ripples, System 80 Jove, MUM M8, Uvcf, and there are a lot more to choose from it makes my head spin.

Sequencer:
The chainsaw has 3 V/oct but no gate outputs so some guidance would be lovely.
Currently my main sequencer is a Metropolis and a Pressure Points/Brains transposing key, i could use pressure points for the chainsaw but would prefer to have another sequencer having multiple V/oct and gates. Ive seen videos of people using the Veroma QMI and Instruo Harmonaig and others using the WMD Arpitecht with the Triad but what suggestions do you have? i would mainly be using the sequencer for chord progressions / soft pads as well as quick snappy arpeggios that can be transposed. There's more complex options like Nerdseq or Hermod which have plenty of tracks, but would MI Yarns, O_C, Pam's workout be suitable for any of this?

TL;DR

What modules would you recommend to make the Acid Rain Chainsaw its own fully fledged voice! from snappy trance arpeggios to nice pads.
My guess is I'll need a Quad or Stereo VCA, Quad EG, Stereo Filter, and a easy to use sequencer capable of handling at least 3 different V/oct.

My only preference is smaller size HP unless its a really magical module, doesn't necessarily need to be in stereo if it makes my choice and patching friendlier, and easily accessible to buy in Canada (or North America).

Sorry for the long post!
Thank you so much for your time and keep on racking in the free world!