No, you only need to download the 3 isos that are i386. What you need to do with them is burn them onto a cd making sure you are using them as image files and not just copying them over, then on first boot (restart) you must ensure that your Bios has CDROM as its first boot device. That should get you to the linux setup screen.
Yes it appears that your conjecture was proven correct much to my dismay
I HIGHLY recommend fedora forum
and linux questions
as this forum quite frankly is a little stale and apparently unfriendly, I think you will have a MUCH better time going there than staying here.