The general rule of thumb seems to be that autos hate being transplanted.
I thought that too, but I think it was Muddy who corrected me, saying transplanting is discouraged because inexperienced people mess it up, and an auto's lifecycle doesn't afford the time to recover. I believe he said many do transplant.
I transplanted 28 times in my first photo grow. I felt I got good at it. I may try transplanting an auto. But, my four auto grows did very well starting in a 3gal container. Initial growth is slow. It's hard to get increased nutrient strength to the plant and let the soil dry between waterings. It's a difficult balancing act for the first 2 weeks. But, I'm ok with it now.
Regarding germination, I soak in 0.5% hydrogen peroxide which is 1 part ordinary 3% peroxide and 5 parts water. I add a half drop of SuperThrive just to give the seeds a whiff of better things to come (like when you wake up in the morning and smell coffee brewing). Ph 6.5.
I've germinated 32 seeds and every one has popped in 16 to 48 hours. (I've had 5 that didn't sprout due to me not being good at planting. I've planted too deep a couple times. Overwatered/sprayed a couple times causing the sprout to "damp off." But, I always got a tap root during germination.).
I did the paper towel method the first time I grew. I think it satisfied my nervous-parent syndrome, allowing me to mess with something and see progress. Since then I soak and go strait to soil when there is 1-2mm of tap root.
I like the peroxide thing because it is h202, water with an unstable oxygen molecule. It disinfects and oxygen precipitates out of the solution, forming bubbles on the seed. I think this helps avoid drowning. It also keeps the seeds floating on the surface which may also help avoid drowning.
I've read some people soak and then do paper towel. IMO, that seems like overkill. I'd do one or the other. Soaking seems to protect the seed from too much contact with other things that could damage the root. But, I should try soak->towel->soil since I've been having some failures going straight to soil. Maybe letting the root develop more would help.