Dude. Pelican/Anvil/custom IATA cases are cool and all, and they totally make sense for repeated journeys. But they're kind of overkill for a single trip.

(I have custom cases made for my equipment in Indiana; they even match our company color on the outside.)

OP, just pack your computer in its original container, then double-box that in a plain cardboard carton with another two inches of packing material all around. Which material you need to use -- peanuts, sealed air, foam-in-place -- depends on the weight, and I typically leave that to a shipping pro. All your handlers will see is a big heavy cardboard box. They'll grunt, swear and beat it up, but they won't steal it outright. The most this ought to attract is an oversize/overweight fee.