Reply to Diy Controller Help

Ok I'm going to be finishing a project and want to add a few things to it
The inards will be a livid brain

Here is what I want to add

a 1/4 jack for a headphone. Can you add sound cards to DIY midi controlers if so how?

a usb hub for adding a on board 500gb 2.5 hard drive that will be able to slide in and out of the controller much like a DVD drive. It will not be motorized but will have push release.

A thumb joystick for browsing and loading tracks in TP2

Any idea on how to wire these in to a diy controller

Thanks