Hello, I'm trying to decide between a 2014 MBA 13" with 8gb RAM and 256gb SSD or one with 4gb RAM and 512gb SSD. Option A would be $1239. Option B would be $1269. So price difference is negligible. My understanding is that the RAM is soldered, and thus not really upgradeable post purchase. Not sure about the SSDs. Primary use will be heavy web surfing, word processing, and photo editing. No gaming. Minimal video processing. Any advice is appreciated. Thanks!