Hi /vp/!

I know I'm WAY late for the ride but I just started getting into Pokémon a few weeks ago!

I've finished Red, Silver, Sapphire, Pearl and pokémon white, and today is my first day playing Pokémon Y.

My team is
Zigzagoon (Dash)
Level 14

Braixen (Cinder)
Level 19

Pikachu (Bolt)
Level 13

Fletchling (Kaze)
Level 16

Squirtle (Shellblaster)
Level 15

Scraggy (Rogue)
Level 10

I'm on route 6, on my way to perfume palace.
And my main question is: Is it possible to beat the Elite 4 with my team as it is? The previous games were kind of hard for me because I didn't know anything about type match-ups and attack power. I have basic knowledge now, and I know about natures and IV's too. Should I EV train my Pokémon or is that just relevant for competitive?

I needed a lot of help from my partner for the previous games, but I want to prove him I can finish this game on my own.
With a little advice from anon-senpai