Still can't get it to work. Even tried pa-gapps to see if that did anything; it installed the apps this time but everything crashed (even keyboard didn't work). Before the keyboard worked but there was no google play store. Are there any other 4.3 gapps packages?
EDIT: Could this be the problem? I tried extracting the zip and it said something like "Data error in 'system/app/GmsCore.apk' File is broken" and a few other similar errors.