New player questions - Spirits and their cards

Hello!
So i am making this game, cause its expensive right now, and after i play some times and if i liked it, then i will buy it to support it!

I know that the base game comes with 10 spirits, but i will only be making 2 to test this.
Witch 2 spirits should i use to start this new adventure?
And i know that every spirit have 4 cards, but i see more than 4 cards when i see people playing it. What are those and should i make them too?
One thing that i added too, was the energy counters that based on the rule book, the game don't come with those. What more should i add?

Thank you all!