Want a Guinea Pig(s) Local Shelter Has Pigs For First Time in Three Years

I got my first guinea pig, Zelda, in April 2012. Since then I have continued to check Petfinder occasionally to see if the shelter gets any more pigs in (I like to look at pictures) and though I used to see them often before I got Zelda, they haven't had any since I brought her home. Until now. They have two pigs that they claim are 2-year-old sisters (They have almost identical markings, so I'm tempted to believe this), and there is even a video of them on Facebook showing how well behaved they are as a shelter volunteer holds them. I am SO tempted to go get them, or at least go look at them.

But... I'd have to do so much first. They would need their own C&C (I don't want to start any fights between my current three, and their cage is too small for even one more pig). This new cage would have to be on top of my other cage, as it is all the room I have in the house for my pets. To prevent these stacked cages from falling over, I would have to build a new stand or (more likely) keep the cages on the floor and move all their supplies to the garage (which is freezing cold right now and sometimes has a big scary lizard hiding in it). And I don't know what I'd do if the shelter is wrong (again) and one or both pigs are male.

*sigh* I just hope they find a good home. And soon, so the temptation will go away.