980X, new board and mem or New 4770k, board, and mem?

[XiP]

Haswell FTW!

Should I stick to my current stuff and upgrade memory and motherboard? Or should I go for the new and buy the new processor and motherboard (again I already purchased the memory)? Second question... Should I start 100% from scratch or just replace the old stuff with the new? I can save about $400 keeping my case, fans, and HDD. Graphics cards will be brand new regardless which way I go. Likewise my power supply which I already purchased. I also already purchased a 240gb SSD. I know a lot of you guys may get lost in the sauce, but for some of you who might know what I'm talking about... I'm just looking for a second opinion.

1) New CPU/mobo
2) I'd keep the case and other stuff if you don't need to upgrade them (i.e. planning on getting new video card(s) that requires more heat dissipation, etc)

Sell the 980X to recoup a little bit of money and that will bring the cost of the 4770k system down. While I think it's great to try and reuse things, the 4770k has about the same performance as your 980X like you mentioned but runs a lot cooler and more efficiently and also supports all the newer bells and whistles. That'll future proof you for a while