Do you know what you want to do other than IT work? Have any idea who your clients will be, or who will pay your bills? If you do, you may not need any additional training - or maybe you do, I don't really know you. My point being, your client will decide how much schooling they'll require.
I'd say the IT industry is one of the easier fields to work from home. Play that card as if it were a benefit in salary negotiations.
The pay can be quite good, and 'statistics' show the field to be growing faster than many others.
The national average for a database administrator is about 70K. Not sure about more details on 'work at home' salaries.