I agree, and I’ve done that already too.
500GB is a big difference compared to 64GB though.
I still have about 26GB free on my tablet, plus I have a 64GB MicroSD card for my files. I have everything synced with SkyDrive (50GB plan) and I have all of that on the MicroSD card.
So the only thing on the hard drive is apps and the OS…all of my docs, music, pictures, videos are on the MicroSD.