it all depends in your envoirement, whishes...... there is no iron rule, when to send her to flower-
I send my aldies in flower , if iam done with their training
that takes me normally around 6-8 weeks, depends in the training and in wich growbox/ tent i put her
so look at your growbox and imagine her double size.... does she fit in=?
or can she grow much longer=?
are you ok with her shape and number of colas=?
It took me a several months to find my own " training-and Growingstyle---- i tested alot iwth different trainig methods and number of colas . number of branches etc------
so its just your descision
and that is the best in growing.... you can do it like you want to