Though I only used for one show, it worked amazing wonders. Depending on how lean you come in and your depletions and manipulations will depend if you come in flat. I'd start running it at 3 days out or so if needed. I'd 1/2 dose on the day of the show if you're holding some unexpected sub-q water. Just make sure you carb up enough. Spilling over isn't really a huge problem as long as your water intake remains steady.
I repeat, if you taper or cut water while sodium tapering whilst on a strong herbal diuretic you will come in a good amount flatter pre-carb load. Based on your pictures I don't think you have much to worry about, your conditioning is already top notch.
I will advise though, first day on it your stomach might get the screaming mimi's. Goes away though. In your hotel room make sure you keep AC high. Hell water under the skin can happen in a matter of hours so just making sure you're careful, that's all. I know you have the experience and such.
Awesome product though. My next show, I'm not sodium manipulating. Probably just ganna use the diuretic. 1 bottle of Xpel will last 2-3 shows, so good deal if you ask me.
Hope this helps bro! Ask away if ya want some more info. And good luck on your on-coming weeks and STAY HEALTHY! You're around immune deficiency peak right now. Being sick 4 days out SUCKS.
Good luck :)