Here's what I would do: I'd pan both guitars 100% L and R, Use an Equalizer to remove sub-bass, bass and a little bit of low-mids. Apply 5-10ms of delay to throw them a bit to the background and soften them up a little (It happens to make a slight bit of space too, at least for me).I would get creative and see what else I could do
But I'd do what I just mentioned for a start. A Limiter or anything else to adjust the loudness and give more warmth to the track. Oh and I forgot to mention, maybe a little bit of reverb. Drums sound muddy. EQ them to give a bit more clarity.
As for the kick drum and the bass... Here's an amazingly useful trick I found in sweetwater.com. I stared out using this trick and moved on from there. (Note: he's referring to an EQ when he mentions all the frequencies. I find it more comfortable to use a Parametric EQ in my case.)
"A common trick to getting a full sound between kick and bass while retaining clarity is to boost the lows on the kick (60-80Hz) cut the low mids anywhere from 150Hz to 400Hz (sometimes called the mudrange) and boost the highs at around 3000Hz. This will provide a solid low end, remove some of the mud in the midrange and accentuate the attack of the kick pedal on the drum. For the bass, we do pretty much the opposite; cut the lows where you boosted them on the kick (60-80Hz) boost the bass at around 120 - 150Hz which will provide a full bass sound (while occupying the frequency space we made by cutting the kick drum in this range), and boost the highs at around 900Hz since bass also provides information in that range as well. In short, we are emphasizing the frequencies that are important to the sound of each, while cutting the frequencies where they can conflict. Try this technique. You'll get a full bottom with a clear
thump with a defined attack in the kick and a clear, full bass."
Play around with EQing the kick drum and the bass. When I was a total n00b in mixing and mastering kick and bass I usually followed this logic: Bass EQ graph should be like the Kick Drum EQ graph except reversed (But not identically opposites). Where I cut frequencies from one EQ I'd boost them on the other.
Now... For example, in one particular track I cut the kick drum between 100-900 Hz and boosted around the 6000 Hz range. Boosted the bass between 120-2070 Hz with a very important boost of about 30-40% in the 600-700 Hz range and cut the 100-900 Hz range that I had boosted for the Kick. Yes, a lot of frequencies overlapped, but it still worked in this case.
It all depends on each sound and the quality. You won't find one specific rule of cut this-and-that and boost this-and-that to get the both instruments to blend and yet contrast them.
Play around with the EQ! Sometimes it can be really fun. You start noticing certain details and few other things