pc for 5 boxing

[Shania]

Okay reading alot, and looking at something like this, prices are roughly.

Intel 6 Core i7-5820K $459 - the 5930k is more expensive, is there much of a difference at all between those 2, will i tmake a huge difference to me, or slight or not really ?
Samsung 840 EVO 500g SSD $259
Graphics card $400-$600 or there abouts. I was looking at lynherts he mentioned a gtx ti, I see a 3g GTX 780 ti and some others higher or lower numbers beside them, what do I actually need, benefit me the most, for around my price.
motherboard Ausrock X99 Extreme 4 $290 or Extreme 3, does it matter much ? I saw some others way way more expensive not sure if it will benefit me in anyway more, I do not plan too sli etc :/
ram ? 16 gig, DDR4 - 2133 $319
case totally love this, hope m/b fits ? http://www.thermaltake.com.au/produc...?id=C_00002143
psu ? - noidea, actually how is it even worked out in what watt you need ?

700watt ? and cpu cooler ?
graphics card, suggestions please be nice!