1) Will this build be powerful enough to run games like; World of Warcraft, Empire total war and Counter Strike:source all on max/high settings?
2) Will everything fit in the case?
3) This mobo is almost out of stock and i will be buying my system in 3 weeks, if this goes out of stock are there any other motherboards with AM3+ support that i can get for arround the same price?
ok well everything will fit in the case as long as it fits ATX and the coolermaster haf is a very popular ATX case so you wont have any problems there.
the video card you chose should more than handle WoW at high/near ultra settings on a full resolution like 1920x1080 at around -60 fps+
there are tons of AM3+ motherboards but my first concern is your power supply, i would go with a 500watt antec earthwatts its more efficient and known for better quality than the corsair that is not really made by corsair.
are you looking for a full ATX AM3+ or seeing as you only have one graphics card would micro ATX be a possibility?