What does your script do? I presume it doesn't do anything root-level, or you wouldn't have permission to use those things either.

Every Unix user has their own crontab; you don't need to use system cron (which would in fact require root level permissions).

Personally, if this is for work and you absolutely require permissions to run cron as root, I'd be speaking to management as to why they require the extra work on your behalf when something built-in and wholly reliable already exists. Get the permissions you need, or perhaps rethink your ambitions. What is it you're trying to do, anyway?