Slightly complex Concatenate with IFS - help appreciated!!

Hi there,

I'm trying to develop a spreadsheet for a small bakery I've started up. I've attached what I've done so far.
What I'm struggling with with is the DELIVERY bit (A23).

I want to be able to produce a Delivery Sheet so that I know the name of customer and type of bread ordered (see my concatenate in A25 as example) which I need to deliver to each delivery hub (listed as A-F in the top left of the spreadsheet).

Is there any way of doing this?

Many thanks,

Ian