Mulisite Installation with Symlinks

Hi,

i am running 2 Blogs for my Family atm running on WordPress. Over Time there will be more coming and i am looking into how to scale this.

I do not like to use multisite from the inbuilt WordPress Feature since it requieres more 3rd party plugins and many rewrites/domain mapping.

right now every site running on its own vhost and its own docroot which makes updating painfull, since i have to replace files in 2 locations.

the idea was to use to symlink for all files expect wp-config.php and the wp-content/ in a directory where www-data has access too.

so for instance there will be folder /var/www/wordpress-files which is not configured in a vhost and 2 other folder /var/www/blog1 and /var/www/blog2 which have a vhost and its own database and its own wp-config.php and wp-content (for themes plugins ect). Ownership and permissions for these folders are the same.

right now every blog has its own set of files and i tryed to ad another blog /var/www/blog3 and symlink the files from inside this folder to /var/www/wordpress-files with for example:
ln -s /var/www/wordpress-files/index.php /var/www/blog3/index.php //for files
ln -s /var/www/wordpress-files/wp-admin/ /var/www/blog3/wp-admin //for folders

when i start the installation on the browser however the wp-config.php from /var/www/wordpress-files/ folder will be used, not the one in /var/www/blog3

As far as i understand i could use hardlinks for this but this would making updgrading not much easyer then it is now… Anybody can help to solve this and get it working like intended? As i said wp_multisite is not an option right now.