Plesk AWS S3 backup script owner

[techlists at phpcoderusa.com]

Hi,

I am rewriting an S3 script that uses the Amazon PHP SDK to perform 
backups.

My question has to do with permissions. The script is owned by root and 
is in the root group.

Overall is it safe or a best practice to allow the script to be owned by 
root?

And I see Plesk is configured a little differently than I would expect.  
So on a Plesk system what user and group should my script be owned by 
and in what group?

Thanks in advance!!

Keith