Seth, you are the crap master so I suppose you know what you're saying.
Of course you aren't going to get a 30 minute wait right now, the thing just opened today and early entry isn't possible unless you booked the Potter package. It isn't always going to have a 7 hour wait like today either. I thought you Disney peeps were the "master planners". Surely you could manage to plan your early entry and be able to get on Gringotts in a very reasonable time, jumping in front of all the offsite guests.
30 minutes will be very doable. We got on FJ in less than that the year it opened by staying onsite and having early entry. Perhaps you should try out Universal before you tell this expert of both Disney and Universal what is and isn't possible.

Let me guess....Autocad is better than Pro-E too, isn't it?