Lol, it's all yours, I wasn't gonna bother with pressure treated, but even painting them would probably give you a few years. Not sure if you can tell from the photo but I put a notch in the bottom of the 4x4 so you could put 2 straps on it, though it could make it uber stable if that's what you wanted. I wasn't sure how stable it would be with one strap, if it's a ratchet probably pretty good, if not you might want 2.
You could even put a few on a tree and climb up to it with your spurs, or SRT and it would be a really quick in and out.
