I came up with 4498hp naked as a Tauren druid with 85sta.
4498 / 1.05 - 850 = 3434 base hp
On the Rip damage formula question, we semi-hijacked a rogue rupture thread (
[Rogue]: Rupture Formula) a little while ago talking about it. I ripped some ogres above Shatt while balance/resto specced (with Naturalist, of course) and found (1092*1.3*1.1 + .24*ap) * 1.1 to be accurate while not specced for Mangle. Every respec I've done since then has been a "port to moonglade, respec, get summoned to instance x" deal, so I don't have any data without talent points.