Yeah, IMO a bunch of mis-info in post #12. I have the RCJI comparison issue, & don't think there is a way to interpolate most of the figures you (Oli) have provided. Snir2001, we are in the same boat..lol I have an Ultra Flash my K180 is going in for now (can handle the extra weight), but the K180 was really purchased for a future Skygate Hawk, but FYI Anton from Skymaster told me he will be releasing a 125" long 3.2m Hawk end of 2014, so I'm holding on the Skygate until I see that.
For the record, I completely agree with Oli in saying the M140 is a better match for your current platform, but sometimes there is more to the equation.
Good luck, I like the way you think..haha