Wow. You're in for a real fun building experience. All good stuff. I don't see anything you need to add. The case will come with enough fans to cool everything nicely.
1) No, you don't need to. But you'll probably want to just for the fun of it. The unlocked multiplier will make it easy.
2) I doubt you'll want or need to add anymore fans. That case is well designed with good airflow as it comes. Generally, more fans = more noise.
3) If you've never built before, check out some online "how to's" for building. Here's a place to start:
Part 1: https://www.youtube.com/watch?v=lPIXAtNGGCw
Part 2: https://www.youtube.com/watch?v=d_56kyib-Ls
Part 3: https://www.youtube.com/watch?v=RxaVBsXEiok
If you run into any snags, relax and come back here to Tom's.
Before you go to install Win8 on the new SSD, read up on this article/tutorial. It will ensure that you get the most performance from the SSD and that it doesn't write itself to an early death. There's a few things about an OS installation to a SSD that can be different from a HDD.http://www.overclock.net/t/1240779/seans-windows-8-install-optimization-guide-for-ssds-hdds