You don't have to advance the upper jaw. The jaws can be rotated CCW around the incisor tip or the ANS without physically lengthening the bone. There's a limit to the amount of pogonion differential that can be achieved via rotation alone, and that will largely depend on your starting occlusal plane. I wouldn't worry about the effects of a maxillary advancement of 3mm or less though if you really need the extra advancement to achieve your goal.
All surgeons agreed i will need 2 mm Upper jaw advancment. Which i guess is good.
Noe just making sure i understand, the bigger the rotation the more my lower jaw will come forward.
You can however add a bsso ontop of the rotation, in which case you will need to renove the wisdom teeth and a make a cut there, or avoid a BSSO and a cut at the wisdom teeth, and simply make the rotation larger.
This might be the reason why Alfaro wanted me to wait and create an overjet, so the rotation will be smaller and the BSSO larger.