Just looking at pics now.
Peas put directly into flowering place , net, and support when growing, remove netting for pollinators when starting to flower. I have never tried peas in a tray, I’ve seen them done in guttering then eased out into a prepared drill. Let us know how you get on.
Carrots also straight into growing area, and cover immediately with enviromesh. Thin, cover up and crop later. Let us know how your carrots do, if they transplant well.
Sunflowers? I did like you last year.
A big success, too big really.
Can’t see what others are.
Good luck and let us know how things grow x