If the broc is 3-4" tall, plant it. Up pot the peppers when needed. Throw the beans out...

Beets plant.
Start new seed for broc. You kinda jumped the gun. Bean need 60*F soil to germinate. I have started them inside, but they sulk until the soil warms. Should be able to plant bean seed last of May, when we get a warm week of weather forecast.
Go ahead and plant beet seed outside. After this week of doom and gloom. Save some seed in case stuff gets frozen.
Stuff needs to harden off outside. Little sun, then dappled sun. Close to building at night for warmth. Under porch roof best. Above freezing forecast for nights coming up. Cold predicted, bring them inside rather than let them get 30* the first couple nights.
Be sure trays have holes so you don't flood them if the rain blows. They are tender now so rain will beat them up. Think red head fair skin for sunburning them. They will toughen up in a few days.
All I can think of. Welcome to the rush the season club. You are fine company.