Thank you @Douglas.Curtis for the super quick reply! I'll post some photo for the thread later.Thank you for the kind words, and I'm glad the information I've gathered here was helpful.
Stable, long term freezable pollen is possible through proper drying. If you're unsure, you can split the pollen in 2 or more sets of small packets. Freeze some and put others in the fridge in a sealed jar with oven dried rice. This will give you both a frozen test, and also a set of packets which will last several months in the fridge (at least).
Either way, the quick and complete drying of the pollen is what needs to happen first for best results.
Yes, the males begin dropping pollen very quickly.
Yes, most 8-11 week strains have pistils ready to catch pollen at 4 weeks. Longer flowering strains can take up to many weeks longer.
As long as you have a bare minimum of 4 weeks of plant life left yes, you can pollinate them. Much preferred is 5 weeks or more for full maturity and health. Ideally you want the seeds to be nearly falling off the plant on their own, and not all plants will stay alive for weeks after their usual chop date.
One to two weeks before, as long as you're ready to collect and dry along the way, should give you a wide window of opportunity. Collect and dry the pollen as it begins dropping. Pollinate the females when they have at least 5 weeks of life left.
You're entirely welcome.