i did the same as mamapan early on & fed one side, then bath, then feed the other side before bed (even though DS wasn't going to sleep all night). we bathed whenever the afternoon grizzles hit - so anywhere from 4 onwards.

now that DS is older we bath around 5.30-6 & then i feed both sides & then put to bed around 7pm. the bath nearly always goes to plan...the going to sleep bit not always!!