1) Yes.

2) That one's a bit difficult to judge, I certainly screwed up the management parts of my job, whether I'm any good as an architecture designer and someone who makes technical decisions ... can't really tell; I think I managed quite alright.

3) I guess potentially I could, but not very happily. I'd rather remain a CTO and have some very hands-on/tough coaching regime to get me into shape within a few months.

4) Right now there's just the two of us, but some other people are involved on a looser basis.