Is it to prefer to cut some fan leafs in veg stage...

I'd say not to train the auto flowering variety to much but to remove any huge fan leaves that overtake bud sites are ok and LST is fine as well she seems to like it a lot right now .I have noticed that people are even mainlining these fastbuds and I never thought they could recover from that but they are .The genetics have come a long way over the years .yours look healthy and whatever your doing is working raise the light a bit more and those internode sites will gap out a bit more giving more to LST and more coverage ...cheers