The NTE germaniums are fine but not anything special. I built one of those boards a couple years ago and split out the gain control into separate pots for the rangemaster boost and the muff gain. In that configuration you want low/medium gain transistors and really any npn Ge and pnp Ge will do. If you're looking for one-stop shopping you'll have a tough time with Smallbear closed up while awaiting the sale to Synthcube which will be a few months. You might try this pair from ebay:
GC511K PNP + GC521K NPN TUNGSRAM MATCHED PAIR GERMANIUM TRANSISTORS 0.3W 1A | eBay
GC511K PNP + GC521K NPN TUNGSRAM MATCHED PAIR GERMANIUM TRANSISTORS 0.3W 1A | eBay
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