Hey Teo....
My Angel has the Axi 4130/16, 80amp CC ESC, 16x10APC. I'm planning on 6s. After we get through winter here I'll be ordering the batteries for it. I'm thinking of batteries somewhere in the mid to upper 4000 range. Maybe even 5000. I have some 5000's and would like to do some flight testing before I make my decision. I'm thinking on the same lines as Mike that if the wing load is jacked up a little she will hold positions better.
I can't think of any thing to tell you that hasn't been discussed already. However, If you need help just give a shout.
Any way good luck with the build.

Dave