To answer your questions:
1. I think OCable is not a part, but means Overclockable.
Overclocking means that you can raise the performance of a overclockable cpu by about 20% if you have a decent cpu cooler to take care of the extra heat.
2. Yes, there are free data migration utilities that will move a complete OS to a SSD assuming that the SSD is large enough to hold the os and all games/apps.
My take is to enjoy the use of an initial SSD. It makes everything else you do so much quicker. 240gb will hold a fair number of games. perhaps a dozen. It is easy to add a hard drive for storage of large files such as video's later.
3. On thee case, buy what you love. It will be with you for a very long time.
The case you picked is a good one with plenty of ventilation.
A inexpensive case is one way to reduce cost, but unless you have a very hard budget limit, I would splurge and buy a case you love anyway.
4. A modular PSU allows you to remove any unused power leads. On a properly sized psu, you are going to use most of the leads anyway. On a standard sized case, like you picked, it is easy to just lay the extra cables on the bottom of the case, out of the way. It is actually easier since you don't have to figure out how to plug the proper cables into the psu.
Here is a list of psu quality tiers. I think the evga unit is tier 3.
I might pick this tier 2 Seasonic 620w unit for less:
http://pcpartpicker.com/part/seasonic-power-supply-m12ii620bronze
5. On the motherboard, I agree on a Z97 motherboard. It gives you future options and allows you to overclock if you wish.
There are no bad Z97 motherboards, the brands are all good.
The Bios on Z97 motherboards are UEFI which gives you a web like format.
All bios defaults are fine, you need to change nothing.
Possibly only to select your boot drive priority.
I might suggest this ASUS Z97M plus M-atx motherboard:
http://www.newegg.com/Product/Product.aspx?Item=N82E16813132130
6. I suggest a simple aftermarket cpu cooler. The intel stock cooler will do the job, but it is tricky to get the pushpin mount on properly. Under load, the stock cooler is noisy and does not cool well.
The hyper212 you picked is a reasonable choice.
7. GTX970 is a great card, this unit is a bit cheaper.
http://pcpartpicker.com/part/evga-video-card-04gp41970kr
I don't think wow is particularly graphics intensive.
You might pick one of the newly announced GTX960 cards like this for $200
http://www.newegg.com/Product/Product.aspx?Item=N82E16814487092&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=