very nice king, buds look great, if you found 1 seed in LA1 then chances are their will possibly be 1 small handfull of seeds further in the buds, once its dry you might find a few seeds that are viable as ive had seeds develop during drying and even some seeds that come out green still germed ok and produced nice plants,
ive not trried keeping pollen in the fridge as i find a dark dry place works just as well but i dont store pollen for long, the only reason ive been put off the fridge idea is when i take something out the fridge it condensates, so taking something out the fridge into a warmer room will create moisture and this kills pollen, so a vac seal might work well and then let it get room temp before opening it, but ive not stored pollen long term the longest ive kept pollen viable is nearly 2 months in a light proof tub in the bottom of a cupboard, pollen produced seeds and all where viable.
its funny you mention you have a plant flower under 18-6, i also had one a couple of months back and it flowered on its own as well under a veg schedule and been a photo plant this should not of happened, not sure why it happened but it continued to flower then when i flipped my other plants to 12-12 it carried on as normal and reached harvest with no problems so not sure whats going on with that,
how ever i have found something out, i kept a male in a pot that was way to small for it and this started producing pollen sacs and in the end produced pollen under a veg schedule, so im thinking once the pots root bound the plant flowers to preserve the species so to speak, so could this of been what was going on with yours, was it in a smaller pot and possibly needed more room, it will be interesting to find out if this is the cause as ive had a male flower when i kept it to long in a small pot and also a female flower that again was in a pot that was to small for it, i ran out of room so couldnt transplant so it stayed in a pot that it outgrew and im wondering is this is why the fem started flowering under 18-6.