Gavroche, from what i can see in the pictures, you will finish to separate them (and transplant) for the end of the month!!! LOL But you're not alone friend, i'm transplanting too... 75 done and hundreds to go!
Click Nicotiana Collection, then click on the PDF link on the right side of the page for a list of their seed. The website has changed since I was last there. I don't know if you can order there, but the information is interesting.