After my last fiasco, I'm not sure how much creditably you'll give me, but I'll take a shot.
5 seconds should be OK. I'd used 8, just because I'm cautious. It doesn't have a high counter, so you're very unlikely to have a manual counter snipe.
It's not prime time (Wed. 13:59:38), but it's close to ending on the exact hour. There's more auctions end on the exact hour, so you might get a slow down. All things considered, just to be safe, 10 to 12 seconds.
Also, I wouldn't post my snipe amount. It's very unlikely that 2 AS'ers would be going after that, but one never knows.
Good luck.
P.S. Sorry for leading you astray on your last post.