Guild Wars 2

Heya =)
I have a newb-question concerning the following quote

Armor
Exotic: The most cost effective choice is full Zerk armor due to its availability. Full Assassin’s armor can sometimes give you higher DPS for some builds, but the difference between the two with appropriate stacks and food is often less than 1%. While learning to play, use Knight’s armor, swapping out to Zerk/Assassin shoulders, gloves, boots, chest, pants, and helm, in that order, as you become more comfortable with content.

I am a new Elementalist and am considering a more forgiving gear-setup in the beginning. Something that – at least – tries to get over 14k HP and ~8% dmg reduction. Therefore, I was wondering if you meant to recommend the Soldiers set with +vit and +toughness, instead of the Knight’s set?
Or is the Precision from the Knights set so important as to ignore the vitality bonus?

My plan is to mix up Zerker shoulders/gloves/boots and soldiers helm/chest/legs. That is, if you don’t think that this is a particularly bad idea xD

Best regards,
Sepher