Thanks. Could I buy one of these kits and split it between the two units for 16GB each?
And is everything else good to go?
You could do that but, believe it or not, you may be able to find exact same 16GB kits for cheaper than a single 32GB kit if you shop around some (I simply used the first Australian computer shop link I found). The reason is that the kits are "matched" so they are guaranteed to play well with each other - not always but sometimes, the less modules that have to be matched, the cheaper the ram.
Shop around a little more than I did, if you find that there isn't a price difference, you can split up a 4x8GB set into 2x8GB's no problem. Also, I used NewEgg's memory finder here to find the compatible kitshttp://www.newegg.com/MemoryFinder/#eTqCr0p0e10AAD
Corsair, Crucial, Kingston, Patriot and a few other ram manufacturers also have similar tools at their websites