So I used ES File Explorer to delete some of the symlinks for busybox which freed up 5 inodes on the /system partition. From there, the D2 Recovery Bootstrap worked and was able to boot to recovery.
Looking at my inodes afterwards, I went from 5 to 3, so 2 of them were consumed with the bootstrap. Next step is deciding on Liberty vs MIUI, but it seems like it will work now! Thanks for the help. I'll post back if anything goes wrong.