I'm a relative Mac newbie in the middle of a transition from Windows. I'm planning to buy a new iMac 5K 3.5GHz 8GB (upgrading to 24GB with Crucial) 3TB Fusion with M290x next week after WWDC. My primary usage will be browsing, editing Office docs, statistical analysis using Stata, and occasional screencast productions. My first question is: Is this machine sufficient to meet my needs? My second question is: Will I be able to hook up two external Dell U2312HM monitors to it, or is it limited to a single external monitor? Thanks for your help!