Try Surf if you can, it's really nice and'll really help in preserving your Latios! Both your mentioned set up dudes are fairly bulky so if anything, they may be able to afford to set up on a hit. Unless your Altaria's got EQ, three of your dudes'll really appreciate 40+ damage off of it. Heatran just seems to be a pain for your team inbetween them usually outspeeding defensive Lando and being surprisingly efficient at Leftovers recovery. I'm not sure of all your sets though so I may be just soundin a bit dumb here >.<. Roost does keep it healthy to keep checking stuff like Keldeo, Rotom, but you have an Altaria so it's a lil more manageable. Your Zone is scarf, im guessin?