Your financial projections and formulas for calculating the total network hash rate are incorrect (20% increase on 218 TH = ~262 TH, not 241 TH). The network is currently at ~100 TH and has increased at 20 TH/month for the past few months.
Your projections start in August at 218 TH and 208 TH respectively, with the "100TH" mine planning to deploy ~103 TH, a realistic minimum projection for the total network hash rate would be ~240 TH. This could be much higher given that what's in the pipeline from ASICMINER, Avalon, Bitfury, BFL and others.
I responded to this and most of your other comments in the article post. In brief, however, I've excluded 100TH from the percentage increase because 100TH does not grow and to counter this the rest of the network growth must double (ie be 40% per month rather than 20%).