Re: pelargonium - autumn sown seed.
I think you are stuck with them inside for the winter. Mature plants might
overwinter in those conditions, but I fear seedlings would succumb to the
elements. You should still be able to bed them out in the spring. Just
gradually introduce them to full sunlight.
Why not grow hardy geraniums? You have the perfect climate for them, and
they put the F1 pels to shame I think.
Robin in Tampa