I have Cerbral Palsy and have not been able to use my right hand since birth, somewhat like your situation. One thing that has helped me is a stanley workmate. As for the clamps, the best ones I have found so far are the one handed bar clamps, you had said you always need two hands for the clamps, well...start using your knees or I often have to prop things up in specific places to make the necessary clamp.
Your biggest challenge in woodworking now will be two fold, driving a nail and drawing a line with a tape measure
Good Luck