You can install over 400 different apps including WordPress with any WeHostWeb plan using the Softaculous Apps Installer which we include for free with every web hosting plan. You can install and manage your app as well as automatic backups.
On average our users use less than 400 MB per site. Most users use much less disk space than what they’re paying for as WordPress users severely overestimate the amount of disk space they need.
If you need custom specification, open a support ticket!