Popa bar: A)Refer to pizza thread, and also Star K has a nice distillation of pas haba bekisnin
B) no, not ktakannas hachamim, that each day has a hiyuv
hadlaka
C)not knowing which day. You are yotze with one candle,
so that is preferable to lighting the wrong number.
E) bein hasmoshos; Why would you do a drabanan aseh
and violate a safek lav d’oraita?