It looks fine transplant it now into some good soil and make sure you bury the stem up to the small round leaves. Put the light closer so it stops stretching and your good. As far as sex goes you have a couple weeks or so before you will know.
Thank you for your advice. I dont even have a growbox, but i will buy one soon. up to now i just had it standing on my table. Do you know which soil i should use?