Part of what I consider to be necessary to philosophical study is making sure I can track the development of concepts and movements enough to see where others are taking their points of departure. The Young Hegelians, of which Feuerbach was a member, took their point of departure from Hegel, and Marx from the Young Hegelians. This makes them somewhat important in the history of ideas. The difficulty is always that figures like him are usually studied only for the purposes of understanding the figures they transitioned between. H. S. Harris, a translator of Schelling and Hegel's Critical Journal essays, mentions somewhere that it should be kept in mind he only reads Schelling for the light he throws upon Hegel, and this heavily shows in his translations. We are lucky here to have George Eliot as an early translator of Feuerbach, and she is definitely the one to go with on this.
Nonetheless there will be the presence of Hegel in this book. Given the climate of German philosophy as explained by the detractors of Hegel, I expected this to be more sycophantic and referential to him than it was. In truth you can take either one without the other if you want. The Young Hegelians focus more on the political and religious critiques one can amass with the Hegelian structure, and not so much on the absolute idealism itself, though they don't depart from the language all too greatly. I'd wager you don't have to understand Hegel more than superficially to understand this.
Good review. Can't say I've ever read this, or Hegel, but for a long time I also wavered between acceptance/rejection of Christianity before accepting it fully. (Though I've found myself in a weird no-man's-land between Methodist, Presbyterian, and a third position I don't know the name of.) If you ever want to discuss with someone who won't try to convert you, feel free to DM me.