Hello everyone! I am looking to buy an iMac. I specifically want an iMac to have as a workstation to do all my grad school assignments, read pdf's or texts on a large screen than a MBP, general web surfing, occasionally playing low demanding gaming (LoL), watching television/netflix, and some iMovie editing/very low intensive photoshop work. I've been thinking of the base 27" iMac base model, so I can use my iMac as a pseudo TV as well as a desktop. However, some people around tell me that its extremely overkill for my needs and 1,800 for a computer is ludicrous. My other choice is the base 21" model to save some money, but I've been hesitant because it seems pretty sketchy to have a notebook graphic card in a 1300 dollar machine. However, If I am to upgrade to the more expensive 21", then I might as well pay a little more for the base 27". Is a iMac 27" overkill for my needs? Does the base 21" model meet my needs? Also, do you see any upgrades as a MUST? I would appreciate if someone more knowledgable can give me some advice. Thank you!