Which data belongs into the (react) redux store?

Question

So I´m currently working on an application, where someone can buy something (via crypto or simple fiat money). The customer has to give some input (project description, project logo, project title etc..., which will later show up in the product). As of right now I´m only using the redux store for loading state, since there is a lot of loading going on in different places and I´m usually really focused on not putting a lot of state into redux.

But it would make life a lot easier and the code probably a lot more readable to simply put all that state (the project info) inside the store, so that I don´t have to work with that immense Propstree between all those components, even tho I actually only need that data once...

Are there any special conventions on "Nono-s" for the redux store?

Glad for any help! Cheers