I probably should do a backup, but there's the fact that it would take so freakin' long to do it.

I don't know about Windows' backup (I'd guess it sucks), but it doesn't have to take too long if you have a DVD burner.

Get burnatonce and ImgBurn (both freeware).  Each DVD-5 holds 4.3 gigs and takes 1/2 hour max (and half of that will be burnatonce writing the ISO to hard disk, so you can work during that time).  The big thing is getting the whole mess ready to make into an ISO in the first place.  I use WinRAR.  You can let that run overnight (breaking the whole mess into smaller chunks, each 4.3 gigs max), then create the ISOs and burn them to disc at your leisure.

Thing is you'd need extra disk space equal to your runtime's size, plus 5 gigs or so.