Why not just put in the highest rated tone caps?
Just started playing around with different caps, and unless I am mistaken, the value of the tone cap dicates the frequencies that will be shorted out when you adjust the knob, I tried a few different value caps, and the only difference I can see with using say a 500 or 700 compared to a 200 is that you get more range in the tone control. At max tone they sound the same. Why wouldnt you just use the biggest possible?
Sorry for my non-technical terminology.