Bigger Chin and a Smaller Nose Possible?

I think the "after" photo you produced is a much better balanced face than the before. In my opinion, the chin implant will make a bigger improvement in your appearance than the deprojection of the tip and you may wish to consider the chin operation alone, which has a speedy recovery.

The procedures you have illustrated using computer imaging of your afters should be achievable with chin augmenatation and a nose job. Please realize that these should be used to estimate but not to predict the final result.