How's my mix?

It's OK for start.Try not to compress drums so much, especially cymbals ,which most irritating in mix.Work on drum sound,can't hear any bass guitar... ,guitar sound is not bad but if you google free amp sims you'll find that TSE X30 as amp sim in combination with Ignite NadIR loaded with some Kalthallen IRs can give you better results and for little warmth search for variety of sound plugins.
 
How about now?

No compression on kit peices other than parallel on the k,s,t's.

Cymbals are not compressed at all (well, mp3..) but maybe a db or 2 too loud?
A touch of reverb.

I feel like the bass just causes rumble when I go any louder than this.
I could probly squeeze out a few more db if needed.

https://soundcloud.com/instinction/emergence
 
It's lacking life. The guitars are kind of tinny and i think the crash could be turned down a little or could be fixed with eq'ing out the harsher frequencies.
 
Your bass guitar is really rumbling, as you mentioned. Try to isolate those frequencies (around 100-450Hz I think) and cut them well. After that, try to put some serious overdrive and/or tape saturation on it, it well help to fusionize the bass and the guitars.
Thin guitars: yes, compression and to much EQ, probably.