This looks great. That's an older Silverstone case you've chosen, but if it suits your needs and space constraints, it's a fine pick. Silverstone updated it recently with USB 3.0, but otherwise, it looks a bit dated. It was a clone of another manufacturer's design, and Silverstone has struck out on their own recently with creative cases like the SG09:
http://www.amazon.com/Silverstone-Te...lverstone+matx
Just wanted to point that out, but honestly, there's nothing wrong with the SG02, and it will probably be easier to build in.
Everything else looks great, and yes, DDR3-1600 is fine for this system. Note that you can usually get Samsung (and other) DVD burners for less at Newegg, but perhaps you're trying to keep it to Amazon.
By the way, you don't need a 2.5"-to-3.5" drive bay converter (what you called a dongle) for the SSD - you can stick it anywhere in the case, including sitting it on (or taping it to) the bottom. But if you want a tray to secure the SSD, I recommend the Silverstone SDP08 converter:
http://www.amazon.com/SILVERSTONE-SD...one+2.5+to+3.5