If you use the PC case, you are probably best off with CFLs. Get them based on their true wattage, not the size of the incandescent bulb it will replace. Get low kelvin rating, 2700K for flowering. If you're gonna use the PC case for veg also, get some 6500K bulbs too. If you measure the size of the case you can find out exactly how much ventilation you'll need, but I'd bet you'd be fine with regular PC fans.
You might also want to try and do a mini-scrog to increase your yield.