You say you wanna haul supplies. The occasional passenger. Ok, Ill substitute mail for your supplies and I come up with a 207, or a 206. Or a 180. Or a 737 combi. In order to make money up here in a single engine airplane, you need to have seating and cargo capacity, decent performance for using short unimproved strips, a strong desire to work very hard, and a wife with a really good sense of humor. Starting out, the best thing you could do is get up here and start pumping gas or tossing bags for an operator and work your butt off while going to school.