Nice guitar chops.
Rather than pushing the guitar tone down into the bass range I'd say put in a bass part. If no bass player is available then I would next suggest using your guitar to record a bass line and eq'ing it to work with the drums in that frequency range. Trying to get your original guitar track to serve a dual role is a lot trickier in my experience. Even if your low guitar (i.e. imitation bass) track pretty much doubles your guitar track you can use a rounder, less distorted tone that will make it easier to blend in the bass range. Try and think like a bass player. Pay attention to the kick and lock in with it.
A compressor can be used in a lot of ways. It can suck the life out of your tracks if you're not careful or it can make them sound denser and more powerful. It can be tricky to use and for me it took far longer to get comfortable with compression than it did with EQ. I would suggest reading some internet articles that introduce compression concepts, play with it on your own, read some more advanced stuff, play with it some more, read, play, continue. Learning to feel and hear the effect of a compressor's attack setting is really important. It's also important to remember that every compressor (plugin or hardware) reacts/sounds different so while you're in the early learning stages it's helpful to stick to experimenting with a single compressor. Later when you're comfortable with how to use compression you can jump back and forth between different plugins or hardware compressors and take advantage of their different characters but if you do that while you're learning the basics it can really confuse your impression of what compression is.