wordpress moving publish metabox - wordpress

Question

I'm working on a plugin and I'm trying to:
1- move the publish metabox from side to the bottom of the page in the normal section.
2- force 1 column layout for the plugin custom post type edit page.
3- remove the screen options tab for the custom post type.
I'm using the next code block but it dont work:
function sds_do_meta_boxes() {
remove_meta_box( 'submitdiv', 'sliding_panel', 'side' );
add_meta_box( 'submitdiv', __( 'Publish' ), 'post_submit_meta_box', 'sliding_panel', 'normal', 'core' );
}
add_action('do_meta_boxes', 'sds_do_meta_boxes');
function SDS_init() { //The current user is already authenticated by this time
add_filter( 'screen_layout_columns', 'so_screen_layout_columns' );
add_filter( 'get_user_option_screen_layout_dashboard', 'so_screen_layout_dashboard' );
add_filter( 'screen_options_show_screen', 'SDS_remove_screen_options_tab');
}
add_action( 'init', 'SDS_init' );
function so_screen_layout_columns( $columns ) {
$columns['dashboard'] = 1;
return $columns;
}
function so_screen_layout_dashboard() {
return 1;
}
function SDS_remove_screen_options_tab() {
return false;
}
So, the 'publish' metabox is removed but it is not re-added. Also, the 1 column layout filters don't work. I need help:)

Answer 1

Changing the $priority parameter from core to high and setting priority of add_action to 0 should do the trick. I would also suggest using the dynamic add_meta_boxes_{$post_type} hook:
add_action( 'add_meta_boxes_sliding_panel', 'sds_do_meta_boxes', 0, 1 );
function sds_do_meta_boxes( $post )
{
remove_meta_box( 'submitdiv', 'sliding_panel', 'side' );
add_meta_box( 'submitdiv', __( 'Publish' ), 'post_submit_meta_box', 'sliding_panel', 'normal', 'high', null );
}