If you had to choose between a designer, or a project manager for the re-
design and re-display of a small local history museum, which would you
favour? <<snip>>
What skills would the project manager bring to you in addition to being able
to oversee the project? Who would provide the expertise of an exhibit
designer? Is there enough money to pay for this work in addition to that of
a project manager? Do you anticipate that you would manage the project
yourself, or expect the exhibit designer to do it?
As you say, your choice will probably depend on the skills of the people
involved, whether they call themselves project managers or exhibit
designers.
In any case, the best of luck....