This very loooooong thread is worth reading. Pecan
Suggest getting Adams #5, Amling, Creek, Nacono, Woodman, and Zinner if you want some more diversity in varieties. Adams #5 and Creek are particularly tolerant of shading and crowding which helps a lot when trees are close together.
I spent the day yesterday in Auburn’s grove picking up mostly Lakota pecans. Most varieties have not yet dropped. There was an absolute carpet of pecans under Lakota and Kanza. Adams #5 is just starting to drop.