Hmmm...could you please get a close up pic of the budsite(s)? Looks pretty good so far...has she begun her stretch? It's not uncommon for auto's to show true flowers after they're finished stretching, which generally starts around the time you're at now. If you've nothing close to flowers by week 8, that's when it is time to switch lighting to 12/12 as it is possible they've mixed up your seeds, or possible that your plant is having a tough time gearing up for flower. Giving grow nutes throughout veg will stretch out the veg phase just a tad bit longer, where as giving bloom nutes earlier on will help to influence a slightly faster flowering speed. Won't make a huge difference, but it does help 'influence' the plant.
*edit* Forgot to add, you may consider some LST'ing before flowering really sets in? May help to open up bud sites and avoid that christmas tree shape. If you're still learning the ropes though they'res nothing wrong with letting her grow as is!