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Have you used Duncan single-coil humbuckers before? And those are too hot for your usage? I don't think you can go by the resistance rating alone to figure out the output. For example, the Duckbucker and Vintage Rails are 2.5k, which is the resistance rating of a Danelectro Lipstick pickup, but in the Vintage Rails case, it's because the coils are wired in parallel. If they made the 78 model at 8-9k in a single-coil size, it probably wouldn't sound like a 78 model. FWIW the Custom Shop Pearly Gates for Strat neck and middle are 9.8k (but those are among the few single-coil size around that resistance - don't know if they could make a Tele version). But I would go by the sound and match levels by trying the different pickups. Production model pickups have a 21-day exchange policy.