Well, since Daz has both An Unearthly Child and The Daleks, I'm thinking that might well make a nice little keen to see the development of the characters sequentially over the two stories. After that, with the obvious exception of The Romans, I think I shall leave the Hartnell era largely alone for the time being, and concentrate on Baker and Davison instead. Which isn't to say I'm dismissing Hartnell entirely, as I'm quite ready to believe that there are some good stories there (as well as some crummy ones). But I just mean that it isn't my top priority.