Hi JonoVizion,
Yes the Octasource is perhaps a bit of an overkill but of all fancy modules you got planned here, keep the Octasource, that module is just sick, sick in a fantastic way, I enjoy that module every time again and again when I use it. It gives you a lot of fun and psychopath of an LFO it is.
I actually like the Doepfer A-124 (SE) VCF5 - Wasp filter module a lot. It's a filter where you get respect for, I really enjoy it and it's reasonably priced.
The Disting mk4 is in my opinion a great module "for emergency cases", let's say you need an extra LFO, or an extra delay module, or an extra... whatever, you can use the Disting for it. Then when you used the Disting for let's say one particular function a lot, then you need for that function a separate module. For that purpose I do think the Disting is a good module.
Kind regards, Garfield.
For review reports of Eurorack modules, please refer to https://garfieldmodular.net/ for PDF formatted downloads