First of: Beautiful plant 👌
Well, when you want to send your plant into flowering phase is your decision.
But if I had to decide, I'd say to do it sometime this or next week, since it's already pretty big and when it goes into blooming it also grows a bit bigger, too.
So, since she is already almost touching the walls of your tent, I'd send her into flower, otherwise she would become too big for your tent.
I hope this helps with your decision😉
Cheers💪