Active job

Installing French doors

We have already bought exterior French doors, and want them installed where there is already an existing window. the French doors didn't come with a frame though so we need the frame built too. (depending on how expensive this is, we'd like a window removed and replaced with the one that is currently where the doors are going). Also, I'd like to make sure that the French doors are a job that can be done in one day? Thanks!:)