Spindle reducer 80mm - 65mm

I designed this simple reducer due to buying the 80mm HD mount for my water cooled spindle kit, but need to use my 65mm Makita router as well, so rather than need to change the mount back and forth, this reducer will serve the purpose perfectly.
Print it upside down so no supports are needed.
I went 100% infill but feel free to play around, it will be a compressed part so needs some rigidity.