Planner for users

Hello,
I have an idea for a website that I need to build and I am looking to see if it can be done in WordPress.

Basically the page will have some basic content and then users will be able to create accounts in the website which will provide them with a set of features, however this features will be personal, meaning that it will only be them the ones to see it, ideally in a private area in the frontend instead of the backend. This is a list of features that I would like to have:
-Tasks to do, so they can put the tasks they have to do and when, once they do them they can mark it as completed.
-Budget, they have a budget area where they can add budget items, for example, car: 2000$
-Guest, they have a guestbook where they can add guests to their service.
-Gifts, they will be able to link gifts to the people on the guestbook.

I have tried to find a plugin for that, but most of them seem to be for one page and public, meaning that you create the guestbook for your whole page, not one guestbook per user registered.

Does anyone have any idea on how to do this with free or paid WordPress plugins.