My Scrogquestions wasn't well thought out - I'm sry - so forget the height question. Can't edit the post (10 minute period) so I make a new one.

I've researched on SCROG and topping now and did I understand it right that it's not good to top autoflowering seeds because of their autoflowering function (they maybe flower while you are still in topping process)? So there's just the SCROG technique to make a higher harvest with a autoflower.

That also answers the question based on the seeds... For topping and SCROGGING I should use feminized normal seeds, right?