This is a very much 'each to their own' type thing, and tbh you probably won't know what suits you until after your LO arrives.
Having said that, before DS was born I did read GF and thought there were some useful ideas in there but knew that there was no way I would be able (or want) to apply that sort of routine...
DS was conveniently 2 weeks late, so I had time to buy and read the large Baby Whisperer book, which basically became our bible.
It was really good in terms of understanding what the baby is trying to express (oh crikey, that sounds very tree-hugging-hippy, but it really isn't!!) and also provided a skinny (1 page for the first 3 or 4 months) suggested routine that was an approx routine/shape for the day rather than a stict 'schedule'.
We used BW for everything from pretty much day 3 when it hit us we didn't have a clue what we were doing, and it really suited us and DS.
But, as I say, every parent (and every baby) is different...
My next is due in Jan and DH and I have realised we need to 'revise' our baby whisperer newborn stuff before it arrives...we've got far too used to having a walking, talking, sleeping, toilet trained 2.5 year old!!!