If You want opinion - here comes mine.
I was eMG, sMG, aMG (don't ask me how many times i made MG lvl 400) and the best for hunt was obviously sMG. Even in Gaion +9+12+5 i could make tremendous damage on hunt - comparing with eMG.
For hunt eMG i would recommend Gaion set, but for sure You will need pro rings, shield and wings.
Question is going for +0 ~ +15 Gaion. You will lose a lot of points in strenght and agility, but You will get better defence.
You can also go other way and use Destroy set +DD+HP (+11~+15) and spend str/agi points in ene/vit.
It's up to You, but if I am making eMG i always put 2k energy. Rest i'm putting according to set, staff, shield I'm using.
Just to compare:
- In Gaion +0 You will get like 2100 energy.
- In Destroy +15 You will get like 2400 energy.