First, I would like to say that this forum is a good source of opinions, but, I would take anything here with a grain of salt. There are many self proclaimed experts. Including yours truly. It sounds like you are doing research on various fronts and that is a good way to go.

The idea of training in a downturn has merit. It's all about supply and demand. When the job market for pilots is grim, as it is now, there are fewer people wanting to enter training and there are some people who are already working for airlines who will decide to switch careers.

Also, it may be true that the larger the downturn equates to a larger upswing. Bottom line is that nobody really knows. If you are in love with flying and in love with the pilot lifestyle, you will find success and happiness. You may find financial rewards as well. If you are just seeking respect from others, a big paycheck and lots of days off, you are likely to be disappointed.

Also, my advise is train an hour at a time at the local FBO while keeping the day job. Much cheaper and probably more fun.