Installing Additive Aerospace Surface mounts for screw switch PCB's

[Estimado]

Hi All,
I am looking to install two Additive Aerospace Surface mounts for screw switch PCB's in a 7” long AV bay. The AV bay is canvass phenolic from MAC Performance Rocketry. Is CA glue adequate for adhering the mount on the inside or would a 5 minute epoxy be better?

Also, does anyone have any suggestions for pressing or clamping the surface mount while the adhesive dries? The 5/16 holes are 3 1/2” in from each end of the AV bay.

Here are a couple of pictures to show what I am working with.

 

[waltr]

Instructions on web site:
https://www.additiveaerospace.com/products/surface-mount-for-screw-switch