Those two plants are also ones that I favor in the garden. The best Morning Glories that I've ever grown were climbing up a string trellis in front of the porch. They were light blue and bloomed profusely until frost.
Zinnias are so beautiful and can be cut and come again throughout their growing period. I think your garden will be picture perfect this year and I would love to see pictures later if you can.
I have 2 spots for MG's already made and one has an iron trellis, and one has bamboo sticks. They love the morning sun.
I hope you don't have a problem with rabbits Terri, because they absolutely adore both of those plants. Tender, succulent, baby seedlings.
/