Once the dissertation is accepted, the question of whether to publish journal articles or an academic book is one that faces many new Ph.Ds aiming for faculty positions. When weighing these options, consider what is standard in your discipline, as some fields reward books while others reward journal articles. Your dissertation committee and director are excellent sources of advice on this question.
For most academic jobs where publications count, the stature of the publisher is crucial to the impact your publication will have on your career. Publishing with a university press known for its important titles in your field, will provide a superior impact. But a press that required a subvention on your part would be less valued.