patience, mi amigo.

yellowing of the lower/lowest leaves is natural.

even a bit of bug chomping is okay as long as it doesn't get out of hand.

you're growing outdoors with nature...can't expect unblemished plants.

some yellow leaves on the lowest branches is okay.
a few leaves chomped by bugs is okay.

leave the fertilizer alone for now...

you say peat moss cups, how big? are the plants going to be transplanted to the ground or bigger pots or at all?

they get root bound fast, so the sooner you get them into their regular spot in the ground or into bigger pots the better.

how tall do you plan to let them get?