i'm no expert, but i know what i personally like. starting with the trill at the end on measure 72, i would not start with the upper note.
i agree with the idea of using sixteenth notes to trill with when starting out on this piece. it sounds kind of boring to more advanced students.
and the triplets are to two sixteenth notes and not four, so they do work out evenly without effort. it's just that if you start out with the main note, it works out perfectly at the end with dcd going to C.
being that it's slightly faster (six notes per beat - instead of the four sixteenth notes) it sounds more 'trillish'