Unusual but not uncommon. Bud sites can vary greatly, from anything to one single site to over 20. I'm not really sure if that's a sativa trait but i wouldn't worry about it, it looks healthy! I have a similar site on one of my outdoor autos. Loving the strain by the way!
Yea this plant is a beast. I topped it 3 times in veg and once when it was flowering and I still had to tie it down all over the place. Took 6 weeks to start growing buds though. I took two clones 3 weeks into flower and they grew so big they were crowding out the other plants so I put them in pots and have them on the floor in my grow room to slow them down. Here's some more pics.
My Super Lemon Haze grows like that as well takes 12 -13 weeks to completely flower, though I have picked her earlier and it still was bomb. Good luck looks fine to me!