[Help] A little help optimizing a self made RoA build?

Hi,

I just got back into the game from long long hiatus and decided to give a try to the RoA/Vaal RoA of old I knew.

However I'm having some issues deciding how to optimize my build now that I'm at lvl 90 deadeye.

As I start to get into tier 12+ maps I found myself dying quite a lot. But before I make a heavier investment into my character I would like to actually know what I'm doing.

My main issue I think is survivality and single target dps.

Here is my PoB current build
https://pastebin.com/WdtZHMPh

My profile can also be checked, there is only 1 ranger character.

Some things that I have doubts with.

Is this aura setup a good idea? I found that in packs of mobs Frostbite gets spread an them but not on single target.


The next big investment I want to make is a new 6 link bow, and I have nothing planned for that 6 link yet, in terms of gems and what to look for in the bow. any suggestions?
Here is what I'm currently using (gems are worthless, don't ask why have that 6link unused please)


Also, I think I have no idea what I'm doing with my cluster jewels. I was going for 2 clusters (close to point blank and acrobatics), any suggestions about this ones? should I get life or dps?

Hope someone can help me get this build going.