I have made several frames from my own trees or from the home owners
trees. In Maine white Pine is the tree of choice I have also used Red Oak
although it tops out before you ca get a stick longer than 24 ft. If they are your trees and your building your house or the house of the person who ones the trees use the best that is there what are you saving then for . as a rule you only get one stick out of each timber using smaller timber for 4x6 knees remember if you don't saw it like I do you want to make sure that the sawer knows how to box the heart . from an average pine or oaK log you will have 8 to 10 boards that are usable lumber pine dries quickly if it ever stop raining Oak boards need
to be finished in a kilm. if you want to know more let me know I have done a lot of this.