Yeah, I think so. I might just be a bit confused about some of the terminology (my understanding is that seers, mediums, and clairvoyants would all have abilities that [i]could[/i] very closely resemble those of type A).

My idea is to have a predominant (but uncontrolled) focus on psychokinesis, but a high potential for almost any other aspects of ESP (if my character would ever allow himself to believe in his own ESP, and decided to actively attempt to master it, which I would assume would take a good bit of time and effort to do).
Essentially, what that would mean is that small objects tend to move for no apparent reason around me, and I might have some semblance of a sixth sense, but I always tend to write it off as coincidence (a draft blowing the pencil off the table, an oddity of the human nervous system giving me a chill for no reason, etc.), at least for the first chunk of the RP until things that are fairly undeniably supernatural have (presumably) begun to happen around them.