Cheers mate ,yeah I move them around so a good size .I did a DWC grow over the winter but found it to be to much trouble ,and an extra $150 a month for power so thinking I will use the summer to get them going good then move them into my tent for flower .I would use a bit larger pots for your next grow, I use 10gal, if heat isn't too much of an issue a 5gal would be the smallest I would go outdoors. I have used 3gal a few times but find it limits plant size.
Most of my plants have shown sex between 15-28 days, most around day 20.