It looks really good. I don't even really have any suggestions on things to change.
You might want to get an aftermarket CPU cooler, though, in case you ever decide to overclock. The CoolerMaster Hyper 212 EVO is a popular budget choice. You can always add one later but you'll likely have to take the motherboard completely out of the case to do it and it's a bit of a pain.
I don't really know how to answer whether it's "worth" getting a 3d monitor. Personally, I can't justify the extra price but that's completely personal preference.
All looks great. You could get away with a 750w PSU for this build, but I know some prefer lots of headroom. 2nd the call for the CM Hyper 212 Evo CPU Cooler. Seems like a shame to get a 'K' processor and then not overclock it with a decent cooler.
I have seen on some other threads people questioning the quality of Hitachi HDDs... the HDD situation is difficult at the moment.
Do you like watching movies in 3D? I've only played a game in 3D for a short time that was setup to demo in store. Not really my thing but I can imagine some people really getting into it, and 3D enhancing the experience in certain games. Be good to test before investing if possible.
Worth getting 3d? thats totally your own call based on preferences. I do think 3d is here to stay personally and eventually it will be just another "feature" on TV's regardless if its used or not but 3D gaming lags behind Movies/Televisions in 3D. Plan on watching many 3d Movies? If so i would upgrade to a BD Drive for $75 more