Sounds about right to me. Your maxilla (and ANS/nose base area) would need to come outward and chin would need to go backwards. That is consistent with suggestion of a CLOCKWISE rotation. A downgraft to the anterior maxilla is what gives the clockwise rotation.
Your ceph (and photos) reveal your mouth area looks 'caved in' because the chin area is too far outward to the nose base area. Hence, the nose base area would need to be moved outward and the chin area would need to move backwards and that is achieved via the CLOCKWISE rotation. Both jaws will then be in a better position relative to each other to be advanced 'forward'. For example the CW-r sets the chin in a backwards and down orientation. So, when it's then brought 'forward' via the BSSO advancement your frontal face will cast longer. When the clockwise rotation sets your front teeth lower, there will be more frontal tooth show and with the' 'forward' advancement to the maxilla, your teeth will no longer be so backward to your mouth. So, your desire for aesthetic improvement, from my POV, is consistent with with the proposed rotations and advancements. If you only got bimax advancement WITHOUT the CW rotation, you would get more of a caved in looking mouth area. See included diagram: CW rotation around incisor point.
DISCLOSURE: My feedback is with aim to shed some light on the basic RELATIONSHIPS that are consistent with the suggestions and/or basic displacements proposed to you. They are not invitations to calculate mm movements or to predict surgical outcomes.