The new production Crybaby Classic w/ Fasel (GCB95F) runs on 9v, di na 18v. I suspect that the Classic is essentially the same circuit as the Original (GCB95 no "F") but with a Fasel inductor and hardwire bypass. From its description, the 535Q sounds like an option loaded GCB95 with an addition booster circuit tacked at the output (I have to see a schematic to be sure). I don't really have any clear suggestion but, do you really need all the options that the 535Q offers? Have you tried a Classic and Original side-b-side, and can you tell the difference between a Fasel inductor and a stock Dunlop inductor? For less money, you can start with the Original (GCB95 no "F"), get a hardwire bypass mod done to it, and use that as a starting point. Then, just get it modded as you find necessary, as you obtain more funds down the road. Anyway, just a suggestion.
Here is another suggestion: POLKA DAAT WAAHH!!