Are you housing all of your pigs in the same cage? Your first problem right now would be to find out the gender of all your guinea pigs and separate the male from the females. This page will show you how.
You can find out how much space you would require in each cage here after you have separated them:
*Note: Most panels (or cubes or grids) are 14 inches square; the grid dimensions quoted also allow for the connectors betweenWhat are you feeding them? Cavies need unlimited grass hay, 1 cup of assorted vegetables and some pelleted feed everyday. This will give you more info on their diet:
Cavy Diet Information
READ ME- Cavy Nutrition Charts & Poisonous Plants List
They all look like Abbys to me. Why do you want a 'pure' Peruvian? I've heard that Abyssinian have really good personalities.