What do you guys think I should do.

As it stands now I may just buble wrap it a little, and then wrap a peice of cardboard around that and tape it around. (its about 2 feet long), ~20lbs?
maybe 2-4 inches wide, tall, tops

What do you guys think i should do?

I'm having it ground so if it breaks during shipping im gonna blame it on the cam ppl LOL i just want to get it there as cheap as possible.
USPS Flat rate box?

UPS? <-- what I might do, because i'm not feeling like an asshole today