You probably won't hear back from him, he's snowed under with years worth of work and looking to retire if not already. I'm sure there's other guys, the rest of us manage with alternative carb builders.
Keep it simple, if it's likely out of your league and you don't have handfuls of mechanical contacts then you probably don't want to go getting too deep into custom mods at this moment. There's plenty of online sellers who do q-jet rebuilds, even if you have to ship yours to them or see if they have a suitable one ready to go. Just give them the current specs of your car, engine, drive-line and potential future mods so they can tune and swap internals to best suit. Of course, if local then even better as can call by for final tuning and choke adjustments. Many seem happier if you aren't, potential issues are then far away and not theirs.