A basic electronics question from a softy.

I have a solenoid valve that i need to keep cool so it doesn’t deform and start leaking. The manufacturer offers a suggestion involving using a capacitor and resistor in parallel wired to one of the valve leads. See the link for a description of the problem and solution and schematic of a suggested circuit. A table in the .pdf suggests using a capacitor rated 1764 uF with a 68 ohm resistor for my valve (P60) running at 12VDC. So i go to DigiKey and see quite a selection of capacitors, and, of course, none at exactly 1764. They are also rated with a voltage. So how do i decide what capacitor to use? What type of capacitor is practical? Do i need exactly 1764 uF? If so, can i just use appropriately rated capacitors wired in parallel so they add up to 1764? What about the voltage? Do i use capacitors rated a bit higher than 12V to allow for start-up, say about 16V? Thanks for your help!

Matt

schematic: