i have recently been pondering how various approaches to compositional processes influence eventual output. is it best to decide in advance how things will be ordered, the exact musical constructs that will be explored or does a more free-form approach work better. perhaps is it best not to try to plan things in too much detail. why A-B-A-C-A-B-Coda? why combine everything into one? if because a certain musicality has taken place around these ideas in your musical being then that is good. if not, then maybe not.