I think I may be underpacking.
Rides of 20-150 miles have the same kit (pump, tube, CO2, multitool, levels, chain link, chain tool).
Drinks on a short ride (up to 60 miles) in one bottle. Poss refilled if hot.
Food for up to 70 miles = 2 gels in back pocket.
Other pockets have phone, bank card, ID, cash, house key, inhaler.
Why the need for all these extra provisions? Are you all going on expedition?
this ^
just use jersey pockets, have a small pump/co2 thingy (it works as pump too) a lightweight tool, park patches and tube. still enough room for food/keys/phone.
can even fit a gilet, armwarmers or a stowaway jacket if needed. i have a small saddlebag but only used that on the tour of flanders for more tubes and extra food.