dllcooper, its nearly impossible to answer that question...
hangarage...at what airport - varies greatly
maintenance...how much do you wanna fly per annum, how old is the aircraft when you buy it etcetc
insurance...depends what type of operation, what level of experience have the drivers, what training will they have...
However, one can very very roughly guess how much an hour would be if you know what a commercial operator takes for it.
IŽd first try to figure out what transport needs you have. Then ask for specialists advice.