Let me break this down for you since i've spent quite a bit of time optimizing warehouse runs (and learned some lessons the hard way). The most efficient setup actually involves working between two large warehouses near each other, around the docks or strip area since they're close together which saves precious travel time. It's worth noting that after each sourcing mission there's a cooldown, but that's actually perfect because you can bounce between warehouses to keep things moving.

Always go for three crates at once when sourcing yes it costs more upfront but saves you a ton of time in the long run because you're doing fewer missions overall. The oppressor mk ii or a sparrow makes everything smoother, and if you've got a terrorbyte parked between your warehouses, that's even better since you won't need to keep running back to your office (this setup will save you hours over time).

Working solo? Stick to managing two warehouses, that's plenty to juggle with cooldowns. But here's something interesting if you've got friends helping, you can expand to three warehouses and really maximize your profits. Speaking of profits, don't sell until you're completely full because the payout per crate increases dramatically at maximum capacity. When you do sell, public lobbies offer that sweet high demand bonus which can boost your profits by up to 36% just make sure you've got something like a nightshark handy in case things get dicey with other players.