Well I've made some progress. I fixed the changes=/dev/sda2 entry and now all four folders are showing up. Also, e17 correctly installs to the changes directory as well.
I tried to nano /root/.xinitrc but that didn't work (couldn't find it, I think), so I put the file in the /changes directory. Now the problem is that when it runs, I get an error about not being able to find /usr/bin/enlightment_start and it goes to the command prompt. I suppose if I was more familiar with Linux's directory structure and commands I could solve this more easily. Considering how much I've learned in the past few days, though (like recovering from screwing up the MBR), it's only a matter of time.