Depends on what we call hotter. It sure will be perceived louder if you high-pass the rhythm harps higher.
Well it sounds pretty good as is, but in general, add compression to the elements that you want to hear at the same level, and let the rest of it create the groove with the peaks and valleys they make. So I would first and foremost compress the lead vocals, then the bass, and then let the rest groove. You can then try more subtle things like glue the "drum" elements bussed into a single compressor set to just a touch of gain reduction ("kissing the needle").
But it's the vocals and the bass that I would compress for sure to make them more stable level wise.
Truth be told, the recordings and the performance sound pretty good to begin with, and it's got that raw energy that doesn't require too much mixing trickery to make it shine. But we can go crazy with that part too. lol