Can this be brought to pot luck; serve hot by warming in oven at 350 for few minutes?

If you've made it several times, are confident it will work out and it's enough (this recipe serves 4. But most pot luck dinners have more attendees than that).
I would choose a baked and/or filled pasta with less liquid...something like tortellini, ravioli or lasasna...that can better stand up to baking.