Kossel Pro E3D end effector version 3

I've created this end effector and im pretty sure it will work, but i'm still waiting on parts to test it out. It uses four 30x30x10mm fans. One cools the hot end and the other three blow air on the print. I use "uxcell® M3x4mmx5mm Female Threaded Brass Knurled Insert Embedded Nuts" on amazon for the hot end clamp. For the arm nuts, use the stock internally threaded tubes that the printer already uses. To mount fans, I use #2 size 5/8" long screws. I meant to order and use #4 size screws but oh