sooo titan?

[Nestama]

it is better to get 4,1k hp in titan as healer & mage instead of 3,2k, in case you get lock in plume by 3-4 ppl run in same direction, you still have enough HP to take dmg from double plume and survive and not drop dead with the 3,2k hp

So what gear/materia would I need to raise my HP that high? Because having 4k+ HP as a SCH for Titan HM sounds incredibly delightful to me.