Kobra wrote:

After the 4th of July I am planning a flight from the Philadelphia area to
Niagara Falls (YSN).

This may be a bit late, but there are a couple of web sites not already
mentioned that discuss the general requirements, which you might find
useful. Here is one from a member of the Rochester Flying Club:

http://www.rochesterflyingclub.com/f...o_canada.shtml

Be sure to check the links at the bottom of the page.