Strat my bru, in 200m with a ton? eish, considered a Mi-17 Helo yet? At least the cabin is cavernous enough to turn into an impromptu opera house with adjoining disco/playstaion park...
On the more serious side, Dornier228 or DHC-6. 228 cheaper to run according to my sources, and will get airborne in about 400-600m with your payload. I'm sure we will be able to organise a can opener to get the Steinway in..
Let us know if you find anything.
Flr