Default Accidentally wiped data....T_T

Hi all, so I got this nice S4 i9505 (telstra unlocked).

after a week I thought I'd try install pacman rom.

I installed openrecovery-twrp-

I wiped all caches, system, data, and than the fatal mistake, I wiped the WRONG data...... now I have nothing on my phone.

It wasn't rooted, I've lost everything, I need to get I9505XXUEMJ5 (stock) and flash it back on, and start again.

I tried

than openrecovery-twrp-

right now I have twrp on there, and not much else.

basically, I've wiped the data and now i need to reinstall stock. than start again flashing pacman.

how can I get out of this situation?

I can't find I9505XXUEMJ5 ANYWHERE with a reliable download, the one I've got is 10KB/s and will take 30HOURS to download T_T T_T T_T I need help....

thanks in advance :3

I need my phone T_T it's brand new.

I'm assuming I9505XXUEMJ5 is the right firmware to flash on it, and that I don't need any extra modem or anything to flash?

to flash pacman rom I just need to install copy rom to phone after stock rom is on, reboot into twrp and flash rom??
what about root?
when I try install from TWRP it works, but when I booted into the telstra firmware it said SuperSu crashed straight away.