Just wanted to add that I am glad you made a full recovery! My Dad had a very severe head injury 10 years ago - the doctors thought there was a less than 5% chance that he would survive; but survive he did and he is doing really well. They tell me that any ill effects of head trauma make themselves felt early on, so you if you haven't suffered any ill effects so far then it is unlikely you will, so I understand.
Yeah, just go for the Class 1 - once you have the initial under your belt, the CAA will know you, will know your circumstances and it will likely be a simple matter of just getting your annual renewal like everybody else...
Good luck and let us know how you get on!