Unhappy with length of philtrum - am I candidate for a lip lift? (photos)

Hello, I am turning 47 this year and have been increasingly unhappy about the length of my philtrum. I no longer have any upper tooth show. However, my lips are still nicely shaped. Although my lips have thinned over the years, they did maintain some fullness. I have had threading of the lip border done once. So, am I a good candidate for bullhorn with corner lip lift, or is my upper lip too full compared to my lower? Also, what kind of cost would I be looking at in Southern CA? Thank you!