Yep, the system img completed.
I'll try out the other steps too once back home. So this time I'll -
1. fastboot the TWRP img file, and boot into recovery bringing up TWRP screen
2. wipe dalvik cache
3. fix permissions
4. reboot into bootloader screen
5. fastboot flash all the img files in sequence except for userdata
6. reboot from the fastboot screen
Can you confirm the above? Also, PMed you.
Yup sounds good. I don't remember 100% the order I did those things on, but it's pretty much that. First I transferred all my files under /sdcard to my pc, then proceeded to do the flashing, first the long files (booloader, reboot to loader, radio, reboot to loader), then next was system.. I think (dont think the order matters much), which actually never completed, it said "writing system" forever, after some hours i cancelled and it seemed to have worked anyway, then flashed the other img files except for data, then wiped cache dalvik etc.. I think for cache TWRP said it deleted and re-created the cache mount/partition; after that I rebooted and was greeted by the encryption dialog asking for my pass, so all was good from then on, it booted to 4.3 with all my stuff.
Next steps was removing/re-adding my google account cause I couldn't download anything from the store (backed up contacts first cause removing the account removes them), then restored them. After that I had to reinstall the SuperSU to regain root access needed for Droidwall (firewall), and everything else was fine, all apps installed and working and the icons arranged the same way etc, nothing was gone