I have 3.5 gigs of HDD space on my xbox. I have 7.5 gigs of space on an xbox 360 configured USB device.

If I spent the money on all the Skyrim DLC, can I store it and run it off the USB without using up my Xbox HDD space? If I can't, I'll be paying for DLC that I can't store on my Xbox. I want to store it and have it ready to play off my USB device.

All tips are welcome, thanks.

Also, would running DLC make the game performance poor?