So where are the apistos going?
FWIW, if you're going to have success with them and the cories, it's a lot more likely in a 55 than in a 29. I don't know who said that there isn't much of a difference in the footprint of the tanks, but a 30x12 footprint to me is a lot different than a 48x12 footprint. That's not to say it will definitely work out, but with more space for the apistos to claim their territory, at least the cories can stay out of it.