Any 1600 MHz DDR3 will work. I prefer Crucial, OWC, Kingston brands, but any sodimm should work. Put an SSD in it and it will be I nice and speedy. I have the 13 inch and love it.
CCC doesnt allow you to clone to a booted volume as target , and since the target drive is blank ,the Mac must be booted from the source disk.so you're not copying your blank target drive onto your good source drive!