I did start reading SOS but the rigidity of it really put me off. I had a lot of medical appointments to have dressings changed when dd was small and I just had to take the appointments that I could get. As it happens my dd was pretty cruisy and happy to be fed wherever we landed and sleep in the capsule/ carrier/ pram. She also had her own natural rhythm and I could usually predict where she would be at what time of day.
OP, I agree with the others, it is good to gather information but once bub gets here some of your feelings may change (I was never going to do many of the things that I ended up doing and didn't do many things that I thought I would) so just take it as it comes and you know where to go for information if you need it.