Obviously that'd be up to the folks you approach, but is it feasible? Absolutely! I've buddy boxed 3 different people...all supposedly "not ready for a big gasser" on my 100CC WildHare Edge. They had a blast, and all 3 flew it just fine. One even stepped up to the "Holy crap, that's FAST!" high rates, and flew it like a champ.

Personally, in my experience, those of us who've gotten into the "big gasser" obsession are just DYING to get others hooked, and will happily spend a fair amount of time helping you discover the obsession.

Now...I should probably say this...

I DO think the advice above is sound. If you thought a .40-sized trainer could do some damage (and it sure as heck can), you ain't seen nothin yet. Big gassers can hurt people, property, and your checkbook in a BIG hurry. Serious consideration should be given to how prepared you are for certain types of flying, certain behaviour of the aircraft, etc.

Having said that, however, imo there's just not much sense in slogging through a bunch of airplanes you're not going to enjoy, JUST to meet someone ELSE'S criteria of "readiness". This hobby's supposed to be fun...and if you're flying a plane you hate you're not having a lot of fun.

If you're not comfortable, or not sure about a certain plane...say, your ~70" Edge idea...then yes...be cautious, and use sound judgement...but don't just drop the idea because someone else (who's NEVER seen you fly, and CAN'T be in your head) says you're not ready. If you think you've got what it takes, then do exactly as you suggested...find someone experienced who will guide you and mentor you, who can give you some time on the buddy box, and go for it!

If, after a few flights, that mentor says "Hey..look..probably not time for this yet. Why don't we try a _____" then you'll still have the airplane, and she'll be ready when you are. Meanwhile, you'll know for sure where you stand, and won't have endangered anyone else, yourself, or your airplane.

It's a win win.