I would really like some suggestions on any parts that I should change out especially with the RAM and cooling system. I would like a really good CPU cooler and cooling throughout the whole case. I think that case comes with 6 fans so that should be good. Also is that SSD any good and can that DVD Burner play cds/dvds as well as burn them or do I need to buy a regular cd/dvd drive? Any suggestions are welcome.
For CPU cooling CoolerMaster Hyper 212+ from amazon at ~$30 is a pretty good buy if you want to go with air.
But that 620 is quite nice and should fit fine. They had a review somewhere with a corsair cooler like that and they are about the same size.
That DVD drive does it all, so you are good on that.
Just so you know the Intel® Core™ i5-2500K is a fair cool processor and does well with a good air cooler. Heck I am running the Cooler Master Hyper 212+ with two silent fans and pulling temps in the low 30s. I hear a lot of people really like the Noctua NH-D14. The big thing with any case is to make sure you have good air flow in and out of the chassis. If the fans are not well placed the air flow through the can be slowed down and lead to heating issues.
As far as RAM the memory that I am seeing used a lot today is the Corsair Vengeance CMZ8GX3M2A1600C9 or here is some G.Skill Ripsaw X F3-10666CL9D-8GBXL are both good memory that should fit your needs.
When it comes to SSD, I think it is understandable that I like the Intel SSDs. The Intel SSD 320s are the most reliable and have the only 5 year warranty in the industry. You can pick up a nice Intel SSD 320 40GB and use with the Z68 board and the Intel SRT.