Greetings
To answer your question re: Cool sculpting timeframes. Many patients can start to see their preliminary results by 6-8 weeks, your body must discover the pathway to metabolize the dead fat cells, for some people this process take longer than others. Every individual is so unique.
I usually tell patients to wait between 2 and 4 months in between treatments, depending on the ability of their personal results. I think you are in perfect timing for your body to schedule your second treatment. Your body is currently metabolizing and removing the dead fat cells from the first treatment, a well timed 2nd treatment seems reasonable at this time for you. You will see the final results from any given treatment at about 4 months time, following cool sculpting treatment. Best of luck to you, enjoy your new sculpted you:)
CoolSculpting is a unique and customizable treatment, the protocols at the Coolsculpting University are well planned with specific applicators for specific treatment sites. If you need to de-bulk an area the large Plus applicator is a great option if in fact you are sculpting an area or have a smaller treatment site the smaller applicators are appropriate.
Both of these treatments you have described are safe, however, it may be that you have a better result with one over the other. Coolsculpting is a relatively new treatment for eradication of unwanted fat. at My clinic we have done several different methods, layering and or dual applicators over stubborn sites to optimize best results. The CoolSculpt protocol generally dictates the use of overlap with 2-4" overlap for best results and sculpting of the abdomen or flanks. We follow your body's contour lines. You look like a good candidate by looking at your pictures, enjoy your journey.
It looks like there is an actual crease or indentation that could be addressed with a HA filler. Botox may help as well. Another option I would like to offer is Halo / BBL laser for skin resurfacing and refinement. This treatment has the potential to completely resurface and regenerate the tissue for a bright finish.