Need Modificatons

The plugin is great and I just need some custom modifications if possible.
I’m selling school and daycare photography and all what I’m looking is the option for parents to select one of the packages first and then fill it with the images selection.

Example:
Package A
1(8×10) select image___
4(5×7) select image___
8 wallets select image___
and so on.

Please let me know if it’s possible and how much would you charge for that?
Thank you!