Looking for a build critique - SSF Ground Slam Berserker

Here's the pastebin:

https://pastebin.com/dGCyKZhZ

I've got the character up to maps and it's clearing white/yellow maps
just fine. I'm sure it will probably be fine in red maps

I'm wondering how late-game viable the build actually is though, like if it will still be capable of handling late game bosses like Shaper and Awakener. Since I've always jumped from build to build I've never gotten to fight these bosses with any character.

The gear slotted in is just there for an HP benchmark with good life rolls and for a DPS estimate with obtainable SSF gear.

There's only a 5-linked Ground Slam for now as I don't have a 6 link and I really hate Tabula Rasa. I've got the "Is enemy at close range" box ticked in the PoB as Ground Slam has a more multiplier against nearby enemies and I think it's appropriate to check off to be representative of single-target DPS. I've got around 1 million DPS but that would be lower if I don't hit max rage stacks in a fight.

I'm looking to achieve a good balance of offense and defense. Is this build going to be able to take down late game bosses or am I wasting my time?

Thanks!