Don't bother mixing the cories with Midas cichlids. Any aggressive cichlid should not be combined with the rather docile cories at all. The only cichlids you could try with cories, are angelfish, discus, Bolivian rams, blue rams and apistogrammas.
As for combining clown loaches with Midas, absolutely not. Neither would I attempt the clowns with cories. Your cories won't be able to compete well with the clowns for foods. If you insist on trying loaches with cories, kuhli loaches are often the best choice for that although you could attempt combining them with Botia kubotai and Botia striata.