All clear TG - I am sure you will be riding the same bikes in 30 years, whereas I probably won't be. Kudos for taking the time to do it properly.
a friend at work that suggested that I not be storing my bike with the chain on for long periods
That is a new one. Did your friends come up with a convincing science-based reason why, or was it just something a 'guru' mentioned to them?
Some other myths for your amusement:
My triathlete friend advised me to park my bike in the smallest sprocket and cogs. Why? To avoid the derailleur springs stretching.
Bike shops used to say that steel frames 'go soft' or 'lose their spring' after a few years.
By buying a frame made from Steel / Aluminum alloy X you get a much stiffer frame than Steel / Aluminum alloy Y
Airline staff who say you need to deflate your tyres to avoid them exploding in an airliner hold