Hi Ld!
Nice video. There's no telling how long they will last. It depends mostly on what kind of juice you're using; sweet, dark, highly flavored juices will gunk up the coil very fast and necessitate frequent cleaning. The more you manipulate the coil and the wicks, the faster they will wear out. Dry cleaning stresses the coil and any coil can pop during the procedure.
Those coils are inexpensive so I don't go crazy trying to prolong their life; I soak them in alcohol (PGA or vodka) for a few hours; I may do a quick dry burn if there's a lot of buildup. I also "wet burn" my coils often--I just fill the tank (1/2 a tank or so) with unflavored base or just plain PG or PG/VG blend and vape that (at higher wattage, usually 7-8 watts) until the juice in the tank runs clear. Repeat if necessary. PG is a good solvent and I feel that those wet burns are easier on the coil than the dry burns.
As soon as I begin to notice that the coil doesn't perform like it used to, I throw it away and grab a new one. You'll know when that happens--with a little experience!
Good luck and happy vaping!