I just upgraded my Early 2011 MBP 15" to 8GB RAM. I find 4GB RAM inadequate for nearly everything. It's even better now when I switch to Bootcamp Windows 7 to play my Steam games.

Should I upgrade to 16GB now? Just for the heck of it? I'm planning on selling my MBP soon and replacing it with an iMac 27" instead. (bought a MacBook Pro for 'mobility' but I never took it outside the room in the 1+ years I am in college). Thus the 16GB will be the selling point.

Right now Amazon is selling the Corsair 16GB DDR3 (2x8GB) for MBP's for only USD79.99. Should I go for it?

+ extra question,

is it possible to upgrade the HDD to SSD in a 15" MBP?