All anyone can tell you for sure here is that if you are growing from random bag seed, you will have random results. No one can tell you how big they should be or what they should look like. We don't know what the hell ur growing any more than you do. Sorry if that's harsh, but what are you really looking for here?

Your plants look nice, should see some preflowers at around 2 months I believe, keep your eyes peeled.

Do you have any direct procedural questions, or did you just want to know how your bammer slammer was doing?