Hi, I am Dave, I will help you with this.
The Home and Pro versions of Windows use the exact same space on the drive, that is usually between 20GB - 30GB leaving 200GB+ of space for your apps and data, therefore 256Gb is plenty of space for any version of Windows 11, and 16GB of RAM is also plenty of RAM, the operating system will use approx. 4GB of RAM leaving 12GB of RAM for all your Apps, that device specifications is more than enough for Windows 11.