I think the trick for the start of the season is continuity. A bit like Klopp when he was bringing in players like Fabinho - slowly acclimatise the new guys to the team bit by bit. That means that the likes of White and Partey should start the season IMO:
Ramsdale
White Saliba Gabriel Zinchenko
Odegaard Partey Havertz
Saka Trossard Martinelli
Rice, Timber etc will get their time, but we're going to lose some cohesion if we throw too many of them in from the off.