pippi, if you do the pgce anyway you will be doing dd1's hours, no? i was sad when ds started, but he loved it so much and he still does. 330 comes very quickly...
we take ds out of school for hols, the head was adamant that the rules say absolutely no absence for hols, but we did and we have not been reprimanded. I always explain how impotant it is for ds' italian and make sure he is not behind with work and socially. if he ever struggles then i will make sure he doesn't miss too much.
BS i almost had a nervous breakdown over school choice, but then visited little school close by and realise that ofsted does not count for much, don't listen to word of mouth, as long as the school is friendly, supportive and with a clever head, then the kids will be fine. gut feeling is important.