Hi Postgradforum! I am about to pick my supervisor, and I need your help.

I am a sociologist, but the subject of the phd project is interdisciplinary towards psychology. I will likely get a secondary supervisor from an external psychology dept who is a specialist in the field, so that part is largely covered. The research project will to a large degree be theoretical, but might include a smaller empirical study. I’m running out of time so I feel like I have to select my primary supervisor from the two following candidates:


Candidate A: Experienced theorist with important influence.
Pros:
Lots of experience supervising
Theory construction as main field of research
Advocating increased focus on theory construction in soc sci, an ambition we share.
Head of PhD studies (Can sign his own budget requests and research plans for my project)

Cons:
Not super enthusiastic about this specific project, but somewhat interested in general
No insight in psychology
Limited overlap in theoretical perspectives
Not very strategic/pragmatic in terms of career opportunities, more of an idealist
No experience with empirical research



Candidate B: Genuinely interested and very enthusiastic younger prof with high ambitions/drive.
Pros:
Displays a lot of interest in both me and the proposed project – seems to see a lot of potential in it and really wants to collaborate on it, gives me space in research group meetings etc.
Is highly ambitious/driven and also highly strategic/pragmatic when it comes to publication, format, approach etc.
Is excellent at identifying possibilities from ideas
Has some experience working at a psychology dept.
Has some overlapping ambitions in terms of advocating increased collaboration, interdisciplinary research etc.

Cons:
Limited experience supervising (a couple of previous PhDs)
Limited experience in general due to younger age (smaller network, less publications etc)
Has mostly done empirical/applied research
Might be stepping on A’s toes by choosing this guy?


My spontaneous feeling is that A is perhaps a safer bet but B has a lot more potential, which is why I am leaning towards B at the moment.