Yeah. You can do it. It's not really rocket science, you just have to take the plunge. The first two I put together I actually broke a sweat because it was a time when I was a super-poor college student with no way to get new parts if I broke those I was working with. This was a time when you had to practically break your motherboard in order to add video ram. One thing to remember... you only need nine posts behind the motherboard that line up with the holes in the motherboard and 9 screws to screw into them. Based on the pictures of that case, it looks like the posts are already in place for a standard ATX motherboard. Other than that, the hardest part (not really hard, just takes some time) is trying to figure out how to attach the board to the switches and lights on a given case, because they're all a little different. Many times the power and reset are mislabeled. Connecting things like RAM, hard drives and video cards are simple. Be careful handling the processor because those pins are very soft and unforgiving. Make sure the arrow on the processor lines up according to the motherboard manual. When you put the H70 pump through the mounting bracket, don't push down on the processor when you turn it and tighten it down evenly. They have a good video on the Corsair site showing how to mount this cooler.
That crucial SSD will be a good addition to your original plan. I use an SSD for my OS/boot drive exclusively. I installed the OS and install any drivers on this drive. The OS information is constantly being read/referenced not matter what you're running, so it just makes sense that the information is available as quickly as possible.
The 5770 will not give you a good introduction to PC gaming if you're used to a 360 (I have a couple 360s in my house). It is a very entry-level video card. I guess if you keep that in perspective, it will be ok to start with. It definitely will not "wow" you compared to 360 graphics. You'll need to jump up to something above the $200 (Radeon 5870, 6950 or 6970) mark before you start seeing things that will begin to impress you.
Man... the more I look at that case, the more I think I'll be using one on my next build. I definitely wouldn't call it a case for a "budget" PC by any means, though.
wow, you have been a big help. thanks.. So what card should i start off with that will make me be like wow. because if i go over the $200. range for video then i will only do one card.
The specs on that power supply look great. You're good to go.