Excuse my ignorance, but if SkyAirWorld's target market is in mining/resources & high capacity charter, isn't this market already becoming saturated with the likes of Alliance and others?
Whilst I've heard nothing but rave reviews for the Jungle Jet, having the latest brand spanking new toy won't be the answer without a strong business model and serious cash reserves behind it. In comparison, the Fokker 100's may not have the latest bells and whistles or longer legs of the Embraer, but they do the job well enough - and they're already here.
As has been suggested already, gambling on a start-up in an already crowded market is a risky move indeed - but then fortune always favours the brave. And the E170/190 is definitely a nice bit of kit, no doubt about it.