How many Hitpoints should a Sorcerer Have at 20?

[Gametym]

So... U12 came out. I joined a Hard Shroud as a Fire Sorc with 280 Hitpoints, 3073 sp and got booted for not having enough Hitpoints! Never has this ever happend to me. I have high umd and can self heal.

My stats are:

Str 16
Dex 18
Con 24
Int 12
Wis 10
Cha 34

I have worked on my dc and sr and usually have no issues killing in normal raids (greater evocation feat and item, +1,2 and +3 Cha items). However I am not a TR.

How many HP should a non Tr sorc have to be raid/epic ready? Someone told me I should have 400, but what I would have to give up to have that would decrease the effectiveness of my spells.