Definitely go for the bath-bottle-bed thing in the evenings, I always aimed to have them asleep by 7 after it and it worked really well.
Aside from that, don't worry too much about routine, just take things as they come. Browse the books a bit, take what seems good from each, and implement it all gradually.
DD had obviously read the Baby Whisperer before she was born, she followed an EASY routine like clockwork. You could have set a clock by her.
DS has been a different kettle of fish, because he's had massive feeding issues and mostly takes short naps, so we threw our hats at it and just let him do what he liked. He's 9 months now and still that way, and it's grand. He does have a set bedtime routine though.
Whatever you do, though, try and be relaxed about it. You can get awfully worried when the routine starts to slip, or if you've to bring them out somewhere and disturb it all, but really, in the long run, it doesn't matter in the least!