Only issue i'm having is how much of each is available...

I'd likely start with Item 1 and expect her to start on item 2...

Since I'd have Item 1 all to myself...i'd either let her have item 2 all to herself or ask for the last bit of it or something...

So item 1 and 2 would be gone first...

Item 4 and 5 would be next and i'd eat the lion's share of 4 while she'd eat the lions share of 5

Item 3 would be last and likely eaten by both of us just bc it's there

if we're just talking about the order I'd eat them...

i'd go 2, 1, 4, 3, 5