You certainly can ~
Create your article.
Click save as draft.
To go back & edit click on articles then your articles.
Draft articles should them show on the right as below ~
Click edit & make your changes ~
Save changes and set to publish now or set a time & date.
It really isn’t how much your coop cost or looks but how your coop page is presented. Did you check out the first post in the thread for tips on creating a coop page? You can find them here ~ https://www.backyardchickens.com/threads/official-byc-coop-page-contest-fall-winter-2017.1205680/