Other than just not having time to deal with it, which seems silly to me on the surface since this is a hobby that relaxes people, I see no reason to start in larger containers, even at the 1 gallon level, in our micro tent gardens. If I was dealing with 100+ plants, I don't want to deal with all that, and will save time by starting at 1gal, but then I am going to be very particular about not uppotting until the rootball is ready. I did try one time to start seeds in those little plastic shot cups that you can get these days, but I found they were not tall enough to support this plant well and I went back to starting in solo cups. I always had good luck in the taller 1" cluster pots that you get for starting tomatoes too.
Environment:
I grow in a spare basement bedroom in a house that has central air and heating. I have closed off that room from this system and I use the tent operation, an outside fresh air duct in the window next to a window air conditioner and a space heater in the tent to control climate in this area and I keep it at 79°f. When it gets cold outside and the humidity drops into the teens, I run a vaporizer in that room also. I also have a computer, a ham radio and a bed in that room so I am ready for any possible emergencies and there is a half bath/shower adjoining that room for any watering needs.