I don't really have answer for most of this, but I'd like to make a comment toward you build and stat build. You could have literally doubled you weight capacity if you invested 2 in sense and 3 in power; as most people fix weight problems by getting a little critical chance increase.
Toward number 2 and 3, if you don't have too significant an investment in all your equipment toward HV; then you'd probably not want to worry about it and worry about DP instead. Charms already have a magic deflection skill to compensate for low MD.
--—Frenchbread is ♥