Hey Taylored,
First of all, don't transplant or repot. Start them in the container they will finish in as autos don't like their roots to be messed with, they will stunt and you wont get much yield.
I am doing an auto run now, just used Scotts moisture control premium potting mix with Osmocote fert already in it. They are doing great.
A note on potting soil... the scotts ph'd at 4.5, way to acidic so I watered with ph 8 water for the first couple of weeks, then used ph 7. I am in week 5 now and I am still watering with ph 7 water. just test the run-through when you water, should be about 6.3 to 6.7
I don't have experience with the ak ryder but with a harvest time of 45 to 55, they will almost certainly be flowering by 12 to 14 days, no matter what you do. Try some in 3 to 4 gallon pots and some in the ground....see how they like it.
Good luck,
Hops