I think just use what they say as a guide. You will find what works best for your bubs. Its going to be different for all of them. No way would just a bamboo & microfibre cut it for Isla. She needs a real night nappy & still soaks those (must wean that sippy cup of water in bed!!)

Give it all a wash, & just play & accept it may take a few weeks to work out the best combo. Also remember that the more washes they get the more absorbent they will become.