Visual Web Part - Storing metadata in folders in document libraries

Hi,

I want to store a number to folders to enforce ordering.
I noticed these three pages

http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.spfolder.getproperty.aspx
http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.spfolder.setproperty.aspx
http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.spfolder.addproperty.aspx

And I want to know if it's possible to use these to add a number to the folder, and then in a CAML query, get the folders ordered by this property?

Thanks.