No, you don't have to make it +6. Brotherhood +1 already can give you the bonus. Because brotherhood cannot be crafted and you can only have one piece (same as Rain's sword). +6 is required only for crafted weapon that has +5 already.
its a small recovery similar to Oldoa's Apron, exactly how much I'm not sure. Utuber tested it out and said it was garbage. your mileage on this info may vary lol.
Max his Lv. to 99, all of his job and subjobs (to Lv. 15). You will see the button to "EX job" on his main job when you've reached all of that. You will need azure broadstone, some earth awakening prisms and fragment on thougths. Through ex job to lv. 25 you can max his Lv. cap to 120 in his ability board
You can see more detailed info about ex job here:
http://wotvffbe.gamea.co/c/550aw3eb
i understand you need about 90,000 jp to max all the nodes in ex level how much jp do you need to fillout the tree and max the abilities even on average cause im curious
Oh good combo, with who, Tifa or 2b, Asterius is on ly good because of his courage long ranger even close ones has advantage, I use earth combo, ice combo on PvP diamonds with whale tarius and every one loose only one with wind combo wind but his team wind teammates do everything
Man, I hope they unlock R.Chocobo's 3*. I got this guy the first time around, and while he's not as strong as my Two-Headed Dragon; I still find it to be more useful on bulkier Light Slash units (mostly my Thancred), and I'd LOVE to promote mine to 3* instead of being stuck at 2*.