To reach certain max stats you should get a specific trained MAG.
But if your new, just train it to the mag.
If your a hunter/Ranger try something like a 5/145/50/0
If your a FO try something like 5/0/0/195/
It it hard to train a MAG perfect but there are enough guides for this.
Also, if you get some currency (photon drops or donation tickets)
Photon drops are in game and donation tickets are on forum, 1DT = 7PD-ish
@JADE sells mags for good prices, you can hit her up.
Hope this helps