Congrats on your new reader!
As long as you're careful and follow the directions, hacking your reader isn't that difficult, and in my opinion well worth it.
I hacked mine several months ago, not too long after the Jeff Elkins released his first version of the customizer. I did have a little problem can't remember what it was now, but was able to work it out without too many problems.
I really like having the uniform fonts and the clock in the lower right hand corner.
Happy reading!!
dordale