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IT for the young only? I think not - having started in the days of the IBM 360 and still working in the field today at a second career in the nonprofit industry - I feel fully qualified to say that as long a you are willing to learn, IT is a good place to be at any age.
As to your list - two important skills/abilities not mentioned are
1) the ability to plan ahead and avoid crisis situations
2) flexibility to be able to adapt your plans as business needs evolve.
CCP