Looks good so far... Give it at least a week from when you topped it. Then remove the larger fan leaves at the very top to allow better light penetration to help the new shoots grow faster.
Awesome man.. I don't know what kind of shaping you have in mind, but I typically flower using a scrog. I can take some pictures when the lights are on tonight if you what to see my setup. I also use a combination of LST and super cropping if I don't have the luxury of a full scrog as depicted in the attached image.
Been thinking of scrog cos tried two autos in same cupboard and think both suffered got a cheesewreck from seedism and a dinafem blue kush freebie that says is good for scrog