Best way to remove index.php and redirect to https

Remove the index.php, set the Index file in the config.php file to blank

Code:

/*
|--------------------------------------------------------------------------
| Index File
|--------------------------------------------------------------------------
|
| Typically this will be your index.php file, unless you've renamed it to
| something else. If you are using mod_rewrite to remove the page set this
| variable so that it is blank.
|
*/
$config['index_page'] = '';

To force https you can do that in the htaccess file (which you will also need to set correctly to use mod_rewrite above)

Which i would search for proper scenarios to match your needs on that