Sup, folks.

The last Pokémon generation that I played was the Unova one. Now, I downloaded the Citra emulator and will give a chance for the 3DS games.

I already chose my versions for sixth generation and the third generation remakes.

But I don't know which of the Alola games should I take.
It's necessary to have played the Sun/Moon games to play the Ultra ones? Or Ultra is just a more completed version and I should skip Sun/Moon?

Also, give me tips of teams for Pokémon X, Pokémon Alpha Sapphire and the seventh one that you guys think I should plaay.