"One size fits all tomato"

In another thread, heirloomer08 is offering some "pay it forward" tomato seed for folks to grow seedlings for donation to worthy causes like community gardens for needy families. It seems like a great idea and we have a number of community gardens in my area where I could donate the seedlings.

Since many of the folks growing in community gardens are first time gardeners, I would like it to be a rewarding experience. I'm thinking about growing some seedlings, but limiting it to hybrid varieties of early tomatoes, mid season tomatoes, and cherry type tomatoes. I believe the bred in tolerances for disease resistance, and high heat as well as better production found in many hybrids offer a better or more rewarding experience for most new gardeners. I was thinking of "Fourth Of July" as an early hybrid, Big Beef or Celebrity as mid to late season beef steaks, and Sungold F! as a cherry variety. How do those sound as reliable choices for zone 7b?

Ted