Thanks, SillyWalks, read your PDF and right now I am building up two YT channel.
Actually, this method is very promising, though I encountered some problems, danger-potentials.
Let's discuss some important issues.
1. The Multi-account issue - Let's say after 2 years I have over 100 YT channels and 100 videos for each channel. That would be 100x100=10000 videos!!!
As eventually all YT accounts are going to be connected to One Adsense, The Big G will surely find out what I am doing. (I also heard Big G collects MAC address)
Question is, What max number are you planning to expand your YT channels?
2. Stolen CC videos issue - Currently I am working in 2 niches.(Animals, Weight loss) There are tons of videos in CC library, but most of them are stolen, watermarked, mirrored videos. (from BBC, Documentary...etc)
For this, Whenever I explore CC library, I always track the video's source. I click video's attributions and I see there are always some videos deleted with their accounts suspended.(around 20~50%, sometimes even 80%)
Question is, How do you select your video from CC library? As Big G will eventually clean up stolen videos, our YT accounts might get deleted simultaneously one day
3. Affiliate issue - Let's say I upload popular game videos with content-locked crack. Will I get banned by YT? My guess is that Big company like Blizzard will notify YT and take me down.
Question is, Is it safe to attach Affiliates to Adsense-connected videos? Or should I use VPN and make new YT accounts for this?
By the way, playing in Big'G's home ground is quite hard. The Multi account managing isn't easier than I thought, Stolen videos everywhere

And Thank you for your PDF file.