http://www.newegg.com/Product/Product.aspx?Item=N82E16822148134 Read the reviews there on NewEgg and there are lots of comments regarding the heat. Should I consider some sort of cooling device?
Just put it in the front of your case where these is hopefully a front fan. As long as you have air MOVING around the HDD you should be fine.
I dont think this case has a front fan: XION Solaris XON-403 Black with Green LED Light Computer Case With Side Panel Window http://www.newegg.com/Product/Product.aspx?Item=N82E16811208009 I was planning on replacing the rear 80mm with a 120mm. Will that be sufficient.
Hmm, well there is a place in the front for another fan. Measure the distance between the top two holes where the fan screws in and then if it's 80mm then buy a 80mm fan and so on.
I plan on replacing the side fan with a different fan, so if the front one is an 80 I will just use the original side fan since it will be hidden anyways I already linked to the case, but trying to decide which cables to buy: OKGEAR 18" SATA II Cable Model GC18AUGM12 - Retail or OKGEAR 24" SATA II Cable Model GC24AUGM12 - Retail Oh and I am using this for a mobo: GIGABYTE GA-EP35-DS3L LGA 775 Intel P35 ATX Intel Motherboard - Retail Those cables will work on the 750 GB Barracuda right? http://www.newegg.com/Product/Product.aspx?Item=N82E16822148134
Your motherboard should already come with two sata cables. Either one of those cables will work fine though. Have you already bought the case? If not then DONT buy it. Buy something better.
I know it comes with cables but I wanted a set of green cables that react to UV light. Which cable is likely the better cable length wise? I want cables long enough to have some slack but not too long either. As for the case, yes I know it's not the best but it seems reasonable for the price and seems it should achieve sufficient air flow. Plus I can't find many cases that have a green theme that I like. Can you recommend some good sites for cases besides newegg and tigerdirect?
Spend some more and get this. You will be MUCH happier. http://www.buy.com/prod/cooler-master-centurion-590-black/q/loc/101/207596288.html And the 18" cables should be sufficient length. TO be safe I would get the 24inch and if you get the Cooler Master case I recommended you can EASILY route everything and have a VERY tidy looking case.