So glad to see these messages, as we've been having exactly the same issues. DD1 was a model GF baby, but, like Ghosty, dd2 has to just fit in round dd1's routines!
We do the same as Ghosty - split feeds either side of the bath, otherwise she gets too frantic during the bath and just conks out afterwards. I also interpret the late pm nap loosely as we never seem to manage the full lunchtime sleep (most days it's just an hour!), and she's so pooped by early afternoon, that she has another sleep then, and a short nap before the split feed.
I've found the Babywise book a useful addition to the GF principles (feed, activity, sleep - in roughly 3-3.5 hourly cycles), because it enables me to fit dd2's needs around those of dd1. Also dd2 never seems able to stay awake for more than about 1.5 hours at a time. This means she's always 'off schedule' according to GF, from the first nap of the day, and spends the whole day cathcing up.
At first, this bothered me, because I'd been so rigid with dd1 and her routine that I thought everything would go to pot if DD2 couldn't follow it too. I've now learned that you can be flexible, providing you follow certain of the principles to the letter (as much food as possible during the day, limiting sleep towards the end of the day etc.)
HTH