Zombii with some mods -- opinions/suggestions?

[MarkL]

I'm planning on building up a Zombii project, and am trying to use the lowest leakage, lowest noise transistors I can.  At the moment, this is what I've got:

For Q1, either a BC550B or a BC549B (both with HFe around 550)
For Q2/Q3, either:
-  a set of 2N1378 (85/130 HFe, virtually no leakage)
-  a set of CV7355 (80/125, very low leakage)
- a set of 2N404 (90/130, virtually no leakage)

I'm assuming that any of my choices for the Q2/Q3 positions will be fine, though I would be curious as to why any of you might favor one choice over another. 

The real question I have is for the Q1 device, which will be quite a bit higher gain than the usual 2N3904 in this position.  To compensate for that, would you recommend lowering the 220K resistor across the B/C of Q1 a bit...to, say, 180K?  Or is this not really so important?

Finally...the volume control on the stock Fuzz Factory is, as we all know, weird, since it is extremely loud already when the pot is up at the 9:00 position.  would lowering the 470R resistor to 390R or even 330R help with this, or would this lower value introduce some problems in how the other parts of the circuit interact?