- Wait for Haswell, it's probably coming in a few days. No sense going for 3770K now, except if you HAVE to buy it from Lebanon.
- The GTX780 is a good card, good option if you want to stick to a top single GPU (bar Titan which is horribly overpriced). But do consider that for that price you could get 2x7950s and they'd KILL the GTX780 in performance, as they OC like champs. If you're sticking to stock performance, then 2x7950s does not look as appealing, but if you're doing some OCing (even with the 780 OCed, mind), they'd perform quite better, and you get much better compute performance per card, so if you were, let's say, running Folding@Home, rendering, or simply enabling some compute feature in a game (Global Illumination in Dirt Showdown), the 79xx cards will keep up FPS and the GTX780 will fall. Check benches to get what I'm talking about.
Either way, you're getting excellent performance from either option, but if you're looking for the simpler and easier way out, a single GPU is best. If you're willing to fiddle (sometimes!), multi-GPU is a better option with regards to performance (power efficiency goes somewhat to the GTX780, card for card).
-Skip that LG Blu-ray / DVD combo drive and just go for a Blu-ray burner. Costs around $70. LG have such a model
here.
I've gotten 5 for me and friends, so far, 4 are currently active with no serious issues, apart from one hanging with medium quality Blu-ray copies, though we haven't tried the rest. Could be a disc quality issue as it only happens with these discs.
Great choices for other components