I'm new to all of this, having only discovered it today.
Would these parts work for building a USB Adapter? I'm trying to build this as inexpensively as possible.
1) Leik UNO R3 Board
2) Leik CP2102 USB to Serial Converter
Amazon does have some Teensy Boards, but none of them appear to have pins on them, and I want to build the version that doesn't require soldering. If this setup won't work, can you suggest some alternative parts, preferably from Amazon (I have gift cards)?
Thanks!

EDIT: Another thing I'd like to know is if I can use the 360 controller and the mouse at the same time? I do this with Battlefield 4 because I suck with the keyboard for gaming on account of limited mobility and flexibility in my left hand due to an accident when I was younger. I use the controller to move my player, aim down sights, do certain actions, etc. while the mouse is for looking around, firing, doing certain actions, etc.