Ebay has some nice 1F 5v caps... for pretty cheap I think 3 for 5$ I gotI would NOT recommend that!
you could put them in series until you get the proper voltage rating...
With capacitors in series, you cannot count on the DC voltage being divided equally. Due to internal variations, the caps won't charge-up equally. One capacitor is probably going to end-up with most of the voltage across it... 'till it "blows". Then, it's going to short-out and the voltage will "move" to a different capacitor, and it will blow, etc.
Also, when you put capacitors in series you decrease
... so if you added in series and charged them with 60 volts you can get 60 amps thru your 1 ohm resistance, which I would suggest not being around when that happens lol...
I don' thave the specs, but due to the capacitor's internal series resistance (and the initial inductive reactance in the coil), it's very unlikely that you could get that much current.