Once upon a time, you could get all five characters at C-Spot if you were the very last family of the night. Nowadays there's nowhere in the parks where you can meet the Fab Five at the same time. Even at dining locations they try to avoid having them together because it would only cause a ton of people trying to get pictures with them as a group.
Long story short: I'm afraid it's extremely unlikely to get a picture with them together, let alone them with your group. Sorry.