Thanks for the help guys. I'm not too interested in road navigation, mainly I want to be able to find the trails. I also want to be able to geoencode digital pictures, I've ran some of the scripts already just plugging in some published coordinates but want to be able to turn on the gps and just let it log while we explore. Thats why I wanted to be sure I had the expandable memory, I wanted to make sure I don't run out of logging space.
My father wants to pull out the old papers on the farm land and have me walk the property lines with him so he can show me the landmarks and I plan to then mark them with the gps so I have some sort of reference of my own as the landmarks fade away ( some are listed as big stump ). I was able to download a pretty good satellite image and found that I can overlay it in a program like google earth so I want to find the coordinates of some clear landmarks on the image to be able to accurately place the image on a map then my walk of the property lines will be accurate.