Hello smackere,
Thank you so much for your nice words. We really appreciate your kind review. To change the order of the page on the slider on other section as well, you can use a WordPress features, i.e. change the published date of the page. The recent date page will be the first items and so on. Please have a look on this blog post to know how to change the page/post published date.
Hope, this will solve your problems.
Warm Regards
Acme Supports