CJS,
Whilst I aggree, that positive use of pprune to say a heartfelt 'Thanks' is laudable, the facts remain. Even on a 9k runway, on a cold day a Tonka taking off in 'Dry Power' would be both foolhardy and dodgy at best. (Clean or otherwise- By the way you had outboard stores).
In my view, stating that it 'could' have been done or even voicing the consideration on this forum was ill advised; It couldn't, and it shouldn't.
I do however appologise for the finger waving, that really was uncalled for. Glad you had a nice evening.
Advo