MrsCleaves

Welcome to the forums @MrsCleaves
In addition to the advice above, if you can give us some more specifics about the work you will be doing then you should get some advice that is tailored to your requirements (“a little of everything” is a bit vague).
In particular, will you want to:
* produce multi-page documents?;
* often manipulate line-art (vector) graphics, and in which ways?;
* remove backgrounds from images?;
* often manipulate images (pixel/raster), and in which ways?;
* create tables of contents or indexes?;
* easily export parts of your work in different ways?
* etc. etc.
The more detail you can give us, the better the help you should receive.

This really depends on what you will be designing.  Publisher has limited ability for design, more accurate to say though is this, Publisher has sufficient ability to manipulate what you have already designed, for example, colour, shapes, tones and highlight and shadow adjustments and few other things.  Best if you google Affinity Publisher and watch a few videos and then you will be better informed about what it can actually do.  designer is of course, the full creative designing package.