Angry [Q] [MTK6589M] Delete system app, root then rom backup question

So i've have a MT6589M device i've try to root it and it gave me some errors (no space left on the device) so i've managed to delete some system app from "system/app" then i've backup-ed the rom with MTK Droid Tools.
WeatherAll_Samsung.apk and .odex
Galaxy4.apk and.odex

Is safe to flash it after ive deleted the .apk and .odex files?

Advise thanks.