I would recommend to swap Bloodlet to First Blood regardless of legendary bracers. Bloodlet can see uses only on Spellblade, Tichondrius and mostly on Botanist.
For anything else use First blood. It makes the opening burst much more better and the sustained damage (10 fury for use is OP).
On the matter with the relic its questionable if its that bad, but yes try to upgrade it asap.
Oh yeah and more crit gear. You have to change neck and 2nd ring fast with crit ones, regardless of ilvl. That will help you a lot too and 4p ofc i see you are half way there