I finally had a chance to work on this again! To everyone who said 8k is too much, you all are very, very correct.
Here's the final, unwrapped version which currently stands at around 4k.
Unfortunately, I've hit a bit of snag. I'm familiar with normals maps and baking from a higher poly mesh, but I've not had a lot of practice. Basically, the only detail I need to grab are the bolts and the indention that wraps around the base from the high poly. What's the best way to approach this? Baking the entire object? Should I try to hide all other parts of the mesh but what I want to bake? Should I just bake those details to a plane and just photoshop it?