Pokemon Emerald - Preparing for Pokemon Sun and Moon

I started to play through with Pokémon Emerald and my goal is to trade my Pokémon through the generations. My Pokémon Emerald team will be battling the elite four of each generation and have them ready to be traded to the new Pokemon games this fall. With Pokémon Emerald my trainer is named MayDay and has choosen the water starter Mudkip.

5 hours in and I'm in Slateport. My team consists of "Ace" Swellow Level 22, "Skipper" Marshtomp Level 20, "Tapatio" Lotad Level 11, "Titanium" Aron Level 10, "Wurminator" Beautifly Level 10, and "Rocket" Zigzagoon Level 3.