Bob, I've not used the POR 15 on a bike tank before but have on a Karmann Ghia tank. Instructions on that were to pour it in, swill it around well, then pour the excess out. Interesting that you are leaving it in place for two weeks. Is that part of the instruction?
As for retirement, part of me can't wait to pull the trigger on that, but I've been working for over 50 years and the idea of not having the "structure" you mention seems daunting to me as well. Being off from work for seven weeks with the knee rehab sure had me bored, but of course I couldn't drive, ride, or do a whole lot of activity. Think I'll give it a try sooner than later.