Also if my PC case is too small for the PSU and such.. anyway that i could buy another case and just get everything swapped over? or is this just not worth the time
A case swap is very doable. Your motherboard seems to have a uATX (micro ATX) form factor as well, so you will need a case that has the holes to mount the motherboard. Here is some of the mid-towers.MicroATX Mid-Towers
Also, if you look up toward the top of Newegg, you will see a heading for Computer Hardware. Move your mouse over it and then select Computer Cases. Then look on the left panel and it will give you options to select Micro ATX Desktop and/or "More". Click on More and it will give more options for cases that are Micro ATX form factor. Pick whichever case you like and fits your budget.
However, going to your local computer stores may be best for you since you are somewhat new to this. You can talk to the people there and see what they say and see what they have. You will get a much better "Visual" for what will work for you. Also, note that some of the cases on Newegg come with power supplies, but as you have pointed out...they can be unreliable and not really put out the wattage the claim to. So just sell that on Craigslist if you pick one that already has a power supply LOL.
With all that said, if I were you this is what I would do.
1. Buy the SeaSonic, Wolfdale Processor, and the 9800 GTX.
2. Visual open your case up once they come in the mail(or once you buy from your local computer store) and see if things will seem to fit, WITHOUT actually unplugging anything yet, Just eye it up for starts.
3. Use your existing case if everything seems to fit, if it ends up not working out then
4. Go to your local computer store, or online, and buy a new case that seems to have bigger dimensions than the case you currently have, that will be compatible with the parts you have bought, i.e. Micro ATX Form factor.
5. You are Done!
Buying online can be very hard in regards to finding out if something will actually match up with screw holes, or if it is too big, or not big enough. So, I would also recommend going to your local computer stores and get to actually talk to someone in person and see what they say, and what they have.
Also note, that the graphics card can be made by many other companies like Sparkle, PNY, EVGA, or XFX to name a few. But generally speaking as long as it says 512mb 256bit 9800 GTX along with it, it is basically the same card, just different manufacturer. They all have the Nvidia chipsets and all.
I think with the products, information, and especially the CONNECTORS you need, along with looking inside your case !!first!! you should beable to go and talk to someone at the computer stores, and look online and make a very informed decision on what you should do and what is best for you. Be sure to print this topic out or re read it and get a good idea of what all you need, etc.
Take a look at the pictures of your motherboard in the link I provided you and also its specifications just to have peace of mind on that these parts are what you need.
To answer your PCI-e vs. PCI-e 2.0 questionRead this
for the best way to explain the PCI-e and PCI-e 2.0 answer. Scroll almost all the way to the bottom for the PCI Express 2.0 explanation. This confirms that 2.0 will work in a just regular x16 1.0 or 1.1 slot. Also, read whatever parts that seem to apply to you, it is a very long article/definition.
Hopefully all this helps you! And let me know if you have any more questions.