Reply to FX controller for TP2 (also, headphone mods?)

I've been mixing a lot lately with my S4 and have been trying to figure out a solution to my FX problem. I love that Traktor has a lot of solid built-ins, and I love that the S4 has a great way of controlling them all. I do NOT love that I have to use my mouse to select which FX I want to use while live mixing. I feel like it takes me out of the mix and forces me to stare at the computer too much.

I was wondering if there is a controller or an option to have a bunch of preset FX banks setup and ready to go with the click of a button. I thought about the Korg Nanokontrol 2, but I wasn't sure if it could do what I wanted. I also have an iPad, so I could get TouchOSC if that will do what I'd like. I'm not sure, and as I said, I'd love to NOT have to bury myself into my monitor when trying to find the FX that I like.

Also, I'm going to be buying some headphones in the near future. Right now, I've just been using the headphones that came with the Presonus AudioBox bundle I bought a while back. They aren't bad, but I'd like something a wee bit better. One thing that I'd like to do is be able to customize them with my own art/graphics. Is there any good guides on doing this for various models of headphones?

Thanks for the help!