600/800 on the 1002 gb/month setup is fine. DH bandwidth allotments are so far out there, you'd have to be a warez or porn site to break them. lol
But, I'd keep an eye on it anyway, just to be sure. Don't ignore the bandwidth thing, ever. It's just common courtesy running on a shared server to keep your resources as low as possible.
CPU Minutes? You'll get tagged for that if you're constantly pegging the system. Don't forget, you're not the only user on this system. High CPU minutes is the same as high CPU usage. You don't want that. You're one of 15-20 people on the server. How would you like it if one of them other sites were pegging the system preventing your site from running smoothly? Keep that question in mind as you make the site.
yerba# rm -rf /etc