So you posted the before on the right? Always post the before on the left!!!
Do you think the chin implant will be necessary if you undergo rhinoplasty?
Are you getting otoplasty at the same time as well?
The dangers of getting everything done at once are abundant. They range from medical concerns (i.e.: blood loss) to one surgeon not having the ability to be an expert at everything (red flag).
Did you meet with this surgeon in person? Have you seen any of his before and afters? Remember those can be fake too. Morphs are interesting and intriguing, but can be very deceiving, as the final product usually never turns out as projected.