Advice needed to increase boss damage.

Good Day,

I am leveling through incursion with a test build for fun doing a elemental hit build. Aiming to grab Elemental Equilibrium and then block cold damage as the basic concept and emphasise attack speed and crit as my main damage scalers. Dead-eye ascendancy.

Leveling right now I am having terrible problems with dps on bosses. so much so that I cannot complete any objectives on temples when I feel like dropping in one. I have tried buying a twink bow and it helped a little but I still couldn`t get bosses below 40% in the incursion timer. Even clearing decently on the way leaving 12 seconds for boss dps.

Can you guys recommend any replacement skills for leveling based on bow. I`ve tried shrapnel shot and frost shot but they are also very enemic at boss damage and basicly dont out pace Ele hit for clearing with my current setup.

Any cheap items/4 point respecs/aims that could increase boss dps for a more pleasant experience? My profile should be open. I`m not willing to give up on the concept of the build. Just wondering if I`m stuck with low dps until the late game gem damage kicks in.

Just wondering if there is any equivalent to molten strike/frost blades as a fast strong clearing and boss dps skill for bows with ele damage.