UStik, looks like we are not that far apart on our thinking after all. And yeah, on a near 100 inch model 34'ish is considered fairly normal. I did the span math and then somehow got the 6 foot thing locked into my head. Upside down 9?

Still, as you say the upper side of 30 sure doesn't provide for a nice scale look. Even on a jet liner (watch them going overhead sometimes. They aren't THAT fast). But with care and staying within the envelope they can fly well.

Spalex, you have GOT to post up a build thread in the Scratch Building forum on this one. I want to see all the chins drop when they see free flight scale model techniques applied to this size of project...

Of course at this size and weight it'll be a sub 5 to 7 mph wind model. That'll limit your flying opportunities but the alternative is a nasty tip over during ground handling or on landing. After all, if you're scaling the wind speed that's 60 to 85 mph! ! ! Yeah, yeah, I know the air mass doesn't work the same at these speeds but this will obviously be a calm day sort of model.