I'll humor you and go with AirRaid.
You're going to first need an accurate QB. Size isn't as important as you can incorporate wide sets from your OL ala Leach and create nice throwing lanes for undersized QBs. Additionally, arm strength (NFL style from far has to sideline) isn't a requisite as the majority of your plays that call for deep outs or comebacks are going to either be on the near side or on the far side but be closer via PA, roll-outs, boots, or scramble drills. You do need a snappy, quick release as most ARs utilize hots off of outs, slants, whips, and 9s down the seam. You'd ideally like a QB who has a quick enough release to take advantage of that.
You also need a smart QB that has an ability to understand fronts and probable coverages he's going to see based on D&D. Now, that is going to primarily be covered during the summer and during your game-planning/film breakdown, but you need a QB who is smart enough to understand what he's getting at the LOS and check into a play that utilizes a solid hot (If you have trips left, then Z slant vs overload right for example. Extremely simplified breakdown)
Additionally for the AirRaid, you're going to ideally have a QB that is mobile a bit. While the AirRaid doesn't typically call for a lot of scrambling or designed runs from the QB, the route concepts run typically have vertical principles (Smash, 3 and 4 verts, etc). By having a somewhat mobile QB, you can scramble against C5 and pick up nice chunks of yardage. Additionally, you'll force teams to spy and play single high, which opens up a lot of different things offensively.
Just a few things on the AirRaid from somebody who has already started drinking.