Top it, no problem, right after the 4-5 nodes, if they don't exist yet, then wait one more week. As it looks, it would be better for you to wait some days. Freedom!
Hi there! Our friend @DudeGrowsWeed is right, wait for the week 3 or 4 when your plant has developed couple of side branches, then you can top her. I'll be around, good luck with this beauty!
I usually top my autos around week 3-4. Also I’ve been doing a FIM pinch recently instead of cutting the top. I think it stresses the plant less and still promotes outward growth and more colas. Good luck! 👍