Freeze and Rain and rethinking the brownie maker

We are having buckets of rain after 2 days of a freeze. My lettuce had just begun to peek through the soil when the freeze struck; I have covered them with cardboard and hope they are no longer shivering. My indoor seeds have broken through and are being watered by the rain which is pouring in from the slider in the kitchen. This not the watering system I planned. While the soil squares appear to be working, they are not maintaining their shapes and will be hard to transplant into the garden intact. My old system of a series of connected boxes (saved from last year) is much easier and I will use them for tomatoes and maybe some more eggplant and pepper. I am also thinking about planting everything else in the ground directly, which seems to be the easiest way, as long as I can get organic seedlings. I have a couple of local nurseries that I like which are organic and I will supplement with them this season. I am still waiting to hear about a beehive. Once Passover is over, I will start the rest of the seedlings..I don't want trays all over the house because we have tons of guests