I say just get the tow package..... if you don't, you're just shooting yourself in the foot at resale time.
I'm still not sure if you even have a truck or if you're buying one.... in your original post you said, "my 08 v6" If it's yours, shouldn't you have already made this decision?
Yes, I already own the truck. Thats why I put "my 08 V6." At the time of purchase, I didn't plan on towing anything that heavy.