Using WP for a small home office

It is pretty easy to redirect users to their profile page at login, and its pretty easy to add pages/content to the user profile. You can also add and remove widgets from the Dashboard. The problem I think you are going to have with finding a ready made plugin is that it looks like you need functions (“their contribution, amount, transactions, n some downloadable stuffs” and “balance amount”, maybe others) that are pretty specific to your project.

You can use the login_url hook to redirect users at login. I can walk you through that. That isn’t the hard part. The hard part is going to be the other functions you are going to need– contribution, amount, transactions, etc.

The login_url hook works like this:

my_login_url($url) {
    return 'http://'.get_bloginfo('url').'/wp-admin/profile.php';
}
add_action('login_url','my_login_url');

Place that in your theme’s functions file or in a plugin.

For the redirection you can use the plugin ‘Theme My Login’
although for the user management I don’t really know
but you can look here http://tinyurl.com/3mgu4le or an example over here http://www.webdesignlessons.com/7-user-management-plugins-for-wordpress/