Based off of another design by MW-Mechanical, this incorporates the 5015 style blower fan.

Some caveats include the thin walls of the fan duct and the difficult support removal. The 5015 can also be difficult to install but it will snap in with enough encouragement.

Next step will be trying to successfully get this fan to spin below 100% as it only works at full speed. Not too great for bridges...

I tested this setup utilizing this model. The results are here.

Anycubic Kobra Go

No

Yes

0.2

I used cura tree supports with 0% infill blocking the duct support. Removal around the duct is very difficult, but doable.