@wouwonline: You could make it the page instead of post. (recommended)
But if you prefer it to make it post but appear as page, this is possible too. You can simply hide them using CSS:
.single-post.postid-46 .post-navigation {
display: none;
}
.single-post.postid-46 #comments {
display: none;
}
.single-post.postid-46 #main .entry-meta {
display: none;
}
For disabling comments, there is another option. Go to edit post page, then click on Screen Option at the top right of the page just beside Help. Some options will slide down. Check discussion option. Then scroll down to Discussion accordion and make sure Allow comments is unchecked. Click update.
Regards,
Mahesh