How would i make an inventory like destiny?

I'm wondering how i would go about this, normal inventory systems are not really hard to make, but making an inventory that has separate columns for separate gear pieces is a lot harder. I know some of the functions i would need to make it are: AddItem(); RemoveItem(); CheckForSlot(); FindItem();, but those functions will not work with the way the inventory GUI is setup, making each row a different style. Would i add multiple inventory scripts to each column? How would i define a column type? (Armor, Weapon, etc). I do not need any script, i just would like to know the best way to handle this style inventory. Including how i would make the slot system, and column system. Here is an example of what it should look like: