Prepping for 30 deliveries in 30 minutes?

So I’m level 111 so have unlocked 99% of items. It’s quite annoying

On a side note - if you’re reading this and a lower level, and you care about achievements, DO THIS ONE AS SOON AS POSSIBLE.

So I’m prepping to do 30 in 30 min.

Any advice on what to prep? Currently I am doing 4 of every item, + completely the 9 already on the board. As well as 20 of each metal.

Anything else I should have a lot of? Or anything I don’t need?

Thanks.