how hard would it be to mix vocals in post? I have no real experience with sound editing programs other than to normalize track and split. I have sound studio for mac and audacity.
Its very easy you simply open up multitrack view select the tracks you want to record and record the guitar first. Then unselect the guitar tracks and select a new track for vocals IMO, I would not record the vocal in stereo! I would record it in mono and process it in stereo with a nice reverb. Stereo vocals do not "sit" properly in a mix especially if you only have one vocal track. You want your vocal to hit you dead center so mono is your friend. Well not really you friend if you have it but you get what I am saying
Stereo guitar is ok because it gives the guitar more space and allows you to get both the sound hole and the finger board. Get the mic in close but not too close to the sound hole because it gets boomy really quickly but again you have to experiment with that. Use your headphones. And remember when its all done reverb is your friend
Find a nice plugin for reverb and use it.
I never really eq vocals I just put a high pass filter in around 60-100hz and call it a day. sometimes I will push 12k with a q of about .5 or so and give it about a 3-4 db boost but this depends on your mic. I also sometimes cut 400 to 800hz no more then about 3-4db and again this depends on the source.
For acoustic guitar I like to use a compressor but not when I track. I like to pull out around 100-150hz to get rid of the tubby sound and pull out anywhere from 400 to 1.5k and again do a nice boost up in the sibilance range of 12k or so but again this depends on your guitar. I don't like to record anything below 60hz on the acoustic guitar unless I have too. Then when that's all done I play around with compression on the guitar tracks. You will find you can even your guitar tone out with out even touching the eq with good compression it will help even the low end and high end out. But again too much and you will lose your top end, I use a ratio of around 1:2 to 1:10 depending on what sound I am going for and how it sits in the mix.
Its not a huge deal here because all you have is your vocal and the guitar. In this case I try to make everything as wide sounding as I can "fat" because you can over process always start with less processing and add or take away as you see fit. And remember just because there is an eq does not mean you have to use it. Less is always more. These tricks have served me well in the last 20 years or so. I am sure you can pull this off. I have a new toy you might want to check out to be honest its the best sounding little recorder I have ever used for the price. and it has a built in microphone that sounds unlike anything I have ever heard for a built in mic Its called the micro br and it can do some very cool shit. Check it out.
It has built in effects over 30 of them built in guitar input stereo line in or stereo mic in with plug in power. It has a built in drum machine, built in guitar tuner and it sounds great I will record some vocal tracks on it and let you have a listen to the built in mic! its pretty dam cool.