Early days yet to say safe,anything can happen not cursing, plant should be established/etstablishing now looking at it, run off in coco if your letting the pot dry out but if your not and seeing salt build up do a flush or part flush if you see salt build up or nute burn making it harder to maintain the right PH in the coco, it's really hard to over water in coco I would treat coco like hydro I think most will tell you that apart from obviously if the plants still very young I had a few look similar structure but now about 3 inch from roof of the tent give time have patience give a week or two see how she looks then, looks fairly healthy imo either way you will take leaves off her if you don't use some method of training The height of the plant may become an issue I haven't and they have gone wild I'm battling with keeping them away from the lights as for gaining height put the light higher make them stretch to it that's where I went wrong being paranoid of them being to close to it now I want the opposite only my experience tho either way I hope they turn out how you want them and good luck