Unique Order Numbers and Job Notes for each product in one sale

[holritzphotography]

I think the title sums it up well. We offer an image editing service, so it's important that if a photographer purchases two editing packages in one order, I'm able to have job notes for each package purchased and ideally assign some kind of "sub-order number" to each product.

Are these things possible? More important the sub-order number for each product in an order than the notes, though that would be nice.

[holritzphotography]

Just to be clear (my vocab was a little jumbled when I wrote that above - sorry!), I need a way of creating some separation for individual items purchased in one order.

I would like to create separation by giving the client the ability to make job notes for each product purchased (rather than a general notes section that is built into Zen). Even better, it would be great if there was a way of allocating a "sub-order number" to each product to create ways of tracking the completion of each product in an order.

Does this make better sense? I welcome any feedback please! Thanks!