Hi Espada, you forgot the resistances.
(Bowa)zons can't be Tanks, I agree, but if you neglet resistances _and_ vitality: you're cadaver at the first hostile thing you collide with.
Or maybe the second, which is on its way no doubt, trailed by a third one (you don't count the fourth 'cuz you've hammered ESC).

Unfortunately I don't have any better equipment to propose.

Believe that my own bowazon was geared practically exactly as you suggested. With Fortitude too, mind you!
She couldn't stand a chance against the Ancients in Hell difficulty.
They kept beating me consistently. At last I won, but it was pure luck.
They all got stuck on a column while I was evading around the gate that leads back to the Ancients' Way. I shot Guided Arrows like hell while they wouldn't move. As I told you: pure luck.
Ain't gonna happen again in a millionz o' yearz.

Ciao ciao : )