I’m yet to buy a wavefolder but still deciding between tip top, Intellijel and Doepfer . Any suggestions?

I would recommend taking a look at the Joranalogue Fold 6. I'm very impressed with that one.
Do I need more vca’s I have two built into Braids and Plaits?

Yes. If you would like to modulate your modulators... fade LFOs in and out, etc.
Is there an advantage to buying a dedicated fx module, like fx aid xl?

I think so. Modular effects typically allow for CV control of multiple parameters. That's not something you get with pedals or most other hardware. You can automate things in your DAW, but that's not as fun. :)

I’m finding that a lot of my patches somehow end up using maths in the signal path and I end up messing with that thing for hours as soon as I see another flashing blinking light show up which as a jack near it. What else is like this?

Quadrax with the Qx expander, Stages, and Befaco Rampage come to mind. There are plenty of cool modulation sources that would benefit from the addition of logic modules and a small matrix mixer too.

-- greenfly

Have fun and good luck!