You should be able to get a sweet open sound with a ~100-200pF cable (including plug C), and a limited, but non-harsh sound with a much higher C cable. BL-150 cable is ~19pF/foot. Not sure what's up with plug availability at this time, but due to the design, they apparently add only ~5pF each. Planet Waves Cable Station cable was measured at 16pF/foot. The plug design probably makes the plug C higher -- maybe ~10pF each? 50' w/10 plug packages are ~$60. 10' of that should be great for the short cable. You could try 20' for a long stage cable, and maybe cut it down a few feet at a time to get the front pickup in the round glassy 4.2-4.5kHz "bell tone" range.

You can order a bunch of different value caps and resisters in roughly 1x, 2x & 5x values really cheap from BYOC. The type of cap doesn't really matter, but it should be rated for at least ~5V. Most are rated far above that. 1.5nF might be great, but I would try 1nF first, and wire over more if you need it. The resistance load lowers the Fr a little from the calculated value. That and your string & pick type, guitar damping qualities, etc make it impossible to tell how it will sound until you try a few values. Also, try 2nF to see if the Fr is too low with the tone knob at 0. It's probably more versatile to have an Fr at 0 just above 2kHz for a slightly edgy/metallic sort of tone. It should sweeten as you turn the knob up to ~4, and open up above that. Experiment to see what you like best.

BL Equipped Guitars:
-Parker NiteFly V1 Strat type: Wilde L280SN/L200SM/L200SL/L280SL w/L-filter & MT.
-Agile ST-625EB: Wilde Microcoil S set.
gckellochguitartech