Pilot Steve,
All good advice given to you so far. But remember if you are planning to go up North and pursue some Charter work most companies as far as I know(through friends on the same pilgramidge) are looking for around 500 hours before they will give you a start. The million doller question I guess, is how do you get this time and on what types should you be endorsed on.
C-210 and C-206 time would be advantages and highly recommended but how do you get your hands on that type of aircraft particularly if you are doing your training in a Major capital city. The other thing you need to consider which has not been mentioned so far is that most flying schools in the major cities do not operate those type of aircraft for training, and even if you were able to get your hands on one the insurance requirements regards hours on type are generally quite high for private hire especially for the C-210 as it will perform the same as or even better than your Seminoles, Dutchess or Travelairs.
All the best
