I've done it, once, with an 8 month old and a 6 month old, and it worked. They've never fought, I put them together in January.
They're Campbell's, and aren't those harder to get to live together? Now, I'm not advising it. But it's possible.
I did, however, know both my hamsters and that their personalities weren't both dominate, so that helped.
I also think you've made a good decision, but I wanted it give you all the input possible.
