Is this a joke? 40-50K? You simply wont get that until you are in the right hand seat of a jet or the left side of a turboprop!
Sure there are a few jobs out there as you put it 'bush' flying, but you will have to join the long line of 1000's of pilots possibly willing to do the bush flying for free, simply to gain hours!
And as for buffallo airways, unless you are Canadian and have a Canadian licence you can forget that!
Instructing will pay peanuts too.
Perhaps you need to keep reading posts before you take the plunge. Go into aviation with your eyes wide open. Its a long and hard road, that takes a long long time to get to anywhere close to where you want to be!