What to do with the last part of my NCB (in General)

Fell like i have hit a wall with my single minion "Null-5" might be the lack of MPR or just a bad set-up.
So I was thinking about hiering a second minion.
Right now my minion is trained like this

1,5mill HP
2,15mill ST
1,13mill DX
1,00 Archery
500k effective DM

and I got all this lovely gear
MsK 5x3000+130
AoM +12
EB +25
Belg +13
HoC +10
BoM +25
ToA lvl 1,7mill

So now if I hired a second minion should it be enchanter or a mage.
One set-up I had in mind was to get a trollskin armor and a EC for my tank and make the ToA into a ToE.
and train some kind of enchantment on my new minion or maybe fireball?
maybe change the BoM to a MgS to boost my survievel skill?

Would be awesome with some advise :)

Any new minion is going to be pretty much useless as a damage dealer for a while. With some NCB left, maybe you could grow it to do some damage, but don't depend on that.

Yeah ofc it needs time to grow, was thinking about maybe using CoC instead of FB, any thoughts on that?