I love meeting with my patient to view the clincheck together so we can discuss things like this prior to approving it. Once it is approved the trays are being manufactured. Altering the final desired result after can add time to the overall treatment and sometimes can add cost depending on your contract with your doctor..
Hopefully, your doctor hasn't approved it yet if you still have concerns. I think what you are asking is a cosmetic preference and not unreasonable and generally easily achieved. That said remember the clincheck is a "computer prediction of what the average human body will do". Also what I think you are asking for will likely happen naturally over time anyway with they way we use, naturally wear our teeth and how they respond.
Either way chat with your orthodontist and make sure there is discussion.
I'm so excited for you! Invisalign can get you as good as result as braces, IF you do as you are instructed. Be militant.