Just be glad that they aren't making thru hikers fill out their full itinerary through the park, instead of letting you fudge over a 38 day period. The logistics of getting the permit will be easy enough. All ya gotta do is pay the $20.
I'm with Mags on this one though, at least the site is super convenient. At least they didn't just leave the old phone in procedure in place and just start taking credit card numbers over the phone.