The Visitor Event Guide/Discussion.

*cough* I make all of my non-mage party members put their normal gear on and just tank the cube damage. I thought everyone did F6.

Edit: You need 8.2k hp for the normal mobs in pq. 10k hp for Bully. 12k hp for speedy room. 15k hp for Aran (And Evan?). 18k hp to survive TV Magic, 27k hp to survive TV touch. 50k hp to survive bombs

We do the PQ with much less HP than that. Not everyone needs to have the required amount of HP to survive in every stage; you just need to have the people to clear the rooms. As an F/P I can clear most of the rooms without any problems, so it wouldn't really matter if maybe 2-3 people just afked for the entire PQ. I'd recommend having 8k HP for a ranged class, though, just so you're not dying to everything, but one of our occasional runners only has 7.1k HP or so and he's still helpful against the boss.

Speedy room is a joke with Snipe and/or any stunning abilities. No getting hit required. Ranged classes can step out of range of the Bully's attacks. The Aran only attacks in one direction and has a limited vertical reach so you can snipe at him. Just have one person aggro it and tank its hits. The Evan does like 17500 magic (I only take about 5k, <3 partial res) but as long as it's pinned it doesn't even attack. For the visitor, most of our party only has 8~8.5k HP, but even with 13k effective HP and with a threatened boss I'm still dead if I get blocked, so it doesn't really matter how much HP you have there.