@robailey, I think it might be too much water for them, but you can always feel the container prior to the next round of watering and if it feels heavier you don't need to water. It's good to try to lift the 'dry' container and the wet one to feel the difference.
As for smaller pots, it's my understanding that autoflowers should be put into their final pots from the start, don't have to be right, but from what I've read and seen I'd say that's better than transplanting them due to the stress of it. I only grew them outdoors in all cases started them in 2-3L pots and transplanted them out.
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