Wheelsmith spokes are out of production, sadly. They can still be found on ebay, although sizes are limited. Personally, I like the 14DB version, which are 2.0/1.7 compared to 2.0/1.8 for many other similar spokes. I recently picked these for my 28h front wheel and they built up really nicely.
As for the wheels in question, I agree with Andy's suggestion but (sadly) 15/16 spokes like he suggested seem to be gone from the market these days. Sapim
Race D-Light spokes are 14/16 which would be great for your front and non drive side rear. Bikehubstore.com sells them but they only are available in black color. For the drive side rear some 14/15's are the way to go.
I like this spoke length calculator and used it for my last couple of builds.
Freespoke: the spoke calculator Good stuff...