Hmm... autos in peat pots. I think I'd cut the bottoms off those gently and ease them into some 3 or even better, 5 gallon fabric pots. Tap root is gonna bottom out in there within a week I'd suspect. I've heard and read that when the tap root encounters resistance, it can factor in to earlier flowering. Maybe it's bro science but prolonging the transition is desirable imho.