Competitive Team help

[Lucario]

Hey guys Im and experienced Pokemon player, but Ive never really been into battling, well at least not competitively. In ORAS I made my 2nd team and I plan to ev train it and breed for ideal Ivs, but first I would like to know the best move sets and items to give my team. I am playing to have a Treeko, Salamence, Marshtomp, Manentric, Charizard, and a Metagross. Any help for any of these pokemon would help, I really appreciate it and thank you tons in advance. :D