I like Ed, I have a great amount of respect for the results he has gotten people, but I'm not crazy about "fill out a form and I'll send you a cam".
So, I would be very detailed on the very last part of that form titled "goals/expectations". This is where you are going to tell him what elevation you live at, what type of gas you plan on running, what you expect for driveability - cold start, idle, low rpm cruise, low rpm acceleration, mid range, off throttle coasting, cruising rpm, mpg concerns, vacuum requirements etc etc... Basically, imagine you are going out to fire up the car, and tell him everything you expect it to act like on your drive to school/work/girlfriends or out acting foolish.
If you are going to go custom, then take the opportunity to be as detailed and realistic as you can be to get the most out of your experience.
Oh, make sure to request valve spring requirements/recommendations as well... or, order a spring kit at the same time...