i think i have those exact same little pots. they are a bitch to pull the plant out. I started slicing them down the side and into one of the drainage holes. This way it can 'flap' open but holds its shape. 100 for super cheap, so reducing their longevity isn't too big of a deal, lol.
When i label them i tape over the sliced area just in case to hold the shape.
initial rooting, so start adapting it to normal atmosphere and a bit more light for sure. I'd take it easy with light intensity until it has more roots.
If it starts to stretch more than a healthy amount, you know it needs more light. No need to guess. Let the plant tell you what it wants.