Rooting attempt on S6 G920F running on 5.0.2

So I was following this guide :
http://forum.xda-developers.com/gala...eta-1-t3082467

Quote:

<ID:0/004> Added!! <OSM> Enter CS for MD5.. <OSM> Check MD5.. Do not unplug the cable.. <OSM> Please wait.. <OSM> CF-Auto-Root-zeroflte-zerofltexx-smg920f.tar.md5 is valid. <OSM> Checking MD5 finished Sucessfully.. <OSM> Leave CS.. <ID:0/004> Odin engine v(ID:3.1005).. <ID:0/004> File analysis.. <ID:0/004> SetupConnection.. <ID:0/004> Initialzation.. <ID:0/004> Get PIT for mapping.. <ID:0/004> Firmware update start.. <ID:0/004> SingleDownload. <ID:0/004> recovery.img <ID:0/004> NAND Write Start!! <ID:0/004> cache.img <ID:0/004> RQT_CLOSE !! <ID:0/004> RES OK !! <ID:0/004> Removed!! <ID:0/004> Remain Port .... 0 <OSM> All threads completed. (succeed 1 / failed 0)

And I think I flashed CF-Root correctly. Tried to boot, Recovery is not seandroid enforcing. I then flashed TWRP 2.8.7.1 (the .img one) and now it proceeds to recovery after boot screen.
I tried restarting to system with TWRP and it went into a bootloop.

Am I on the right track? I mean is it supposed to be like that until I do a factory reset? I'm scared cause the ROM is still downloading lol how do I put it in the device's internal memory? Will I be able to in Download Mode?

On a PC running Windows XP right now, Samsung's USB Drivers don't seem to work whatsoever. I'll try it on my laptop and we'll see.

(p.s. should I have opted for the one-click rooting and stuff? Idk the guide tells me to do it via Odin so yea lol)