What in your view is the best way to position the Coolsculpting applicators for me to get the best results? (photo)

In my opinion you are not a good candidate for CoolSculpting. You seem to have a combination of fat and loose skin are are over your ideal body weight. With 4 large applicators you will be spending a lot of money and seeing minimal result. I would save your money. Make sure you see an experienced physician who can guide you toward the most appropriate treatment for you. Don't take the word of a nurse or tech. Best wishes.

4 large applicators sounds like a lot, typical patient needs 2 to 3 for the abdomen (4 to 6 sites)  the patients I use 4 on are normally around 225lbs.   Plus you have extra skin, and a small abdominal pannus, not sure if you are going to be happy with your results.   I would seek out a plastic surgeon that does liposuction, tummy tucks as well as coolsculpting for a 2nd opinion.

Coolsculpting melts fat on areas that are exposed to suction and cooling. One treatment removed around 25% of fat cells. It is hard to tell without pictures what is the best way to position applicators. Discuss your concerns with your provider. If it is experienced and reputable provider, then they should know what they are doing. You need to relax and look forward seeing your results. Your initial results should be visible after 8 weeks, while it may take longer. If you have sagging skin, coolsculpting will not address this problem. You will have to consider different treatments. Good luck!

It would appear that you have chosen CoolSculpting as an alternative to surgery.  Many people make this choice, and can be very happy with the results that CoolSculpting will provide. The best possible candidate for CoolSculpting is someone who is 10-20 pounds from their goal weight. It is important to have reasonable expectations.  Looking at your pictures, it would appear that you have some overhang and some degree of skin laxity.  You may find that there will be loose skin post treatment with Coolsculpting.  In addition, it would appear that you will need up to three treatments with CoolSculpting to achieve the best results.  
Regarding the placement of the Coolsculpting applicators, I'm sure that what your provider is describing is a diamond shape around the navel.  They will treat both your upper and lower abdomen using two CoolMax or CoolMax Advantage Plus applicators.  These applicators will most likely follow the line of your bulges as they are naturally found in your body.  The bottom two will be placed one after the other, side by side and form a wide 'V".  The upper abdomen will also be treated with two large applicators, and form an inverted"V". They would not want to place any applicators vertically, as they would not follow the natural lines of your body, and would leave a very unnatural result once the fat has gone. 
So, I do believe that they will be treating you correctly.  I hope this helps.  

Coolsculpting melts fat on pinchable areas through the process of suction and cooling. One treatment removes around 25% of fat cells. You may not benefit significantly from Coolsculpting. Coolscupting only treats fat cells and not sagging skin. It is important to choose experienced provider who will determine if you are a good candidate and at the same time s/he will know the right applicator placement as well. If you proceed with Coolsculpting, your initial results should be visible after 8 weeks, while it may take longer. You will need number of treatments to see some improvements. Again when it comes to the sagging skin, coolsculpting will not address this problem. You will have to consider different treatments. Best of luck!