Hello, I'm a first-time gardener, starting a vegetable garden in my backyard. I have a 14x7 ft plot tilled, and I also tilled a strip that is 20x2 ft right next to my fence for some trellises. I made one trellis out of branches and I'm being given a 6x6 ft chain link panel for the other. Here's a picture of the trellis that I made (the chain link panel will be set up to the left of it):

So my question is, what should I grow on each trellis? I figure since the openings on each trellis are such different sizes, some plants might grow better on one or the other. I also would like to know how many plants I could grow on one trellis, I have seeds for:

Marketmore Cucumbers

Boston Pickling Cucumbers

Hale's Best Jumbo Cantaloupe

Hearts of Gold Melons

Table Queen Acorn Squash

Snow Peas

I have strawberries growing to the right of the trellises, and to the left I am probably going to grow my watermelons and/or pumpkins, because they will have a ton of room to spread.

I have two varieties of indeterminate tomatoes (and one determinate) that I am planning on staking in the main garden. I also have two varieties of eggplant (Black Beauty and Long Purple). Do those need to be staked as well?

Thanks!