For the case, you can't go wrong with Corsair, despite the fact that they carry a bit of a price premium. For a first time builder that can afford a Corsair case, there isn't really anything else I would recommend. (unless you really want to cut your costs down)
SSD's are essentially hard drives with no moving parts. They're infinitely faster and come in both SATA and PCI-E formats. (the latter being way out of your budget) Price per GB is higher and they have a limited number of writes. I suggested one because your motherboard has a Z68 chipset which can take advantage of Intel SRT, which is essentially software that allows your hard drive to use the SSD as a giant cache. Which basically makes everything you use often a whole lot faster. With current HDD prices skyrocketing due to floods in Thailand, it doesn't make much sense to me personally to buy a new HDD if you have any old ones you can reuse/salvage. For half the price you can get a 64GB SSD and use it for caching. Speed of your old drive won't be a huge issue either and you don't have to worry about any SSD tweaks to prolong the lifespan.
AKG wrote a little buyer's guide on SSD's, it's a little dated but it'll give you the general idea:
So you wanna buy a SSD? Read this first.