Melee FO will either be FOmar/marl which means you'll have 250 mats to play around with. I used 110 pow, 125 mind, 15 luck on my fomar (can reset power when I reach 200). And used CBatt and 3 adepts until I leveled enough to replace one Adept with a smartlink, and then a second Adept with V502. (V801 isn't really that useful imo).
Best weapons are easily banana cannon for crowd control, and lindcray or sacred bow for high single Target sniping. Rage de glace is also useful, but requires you being very close. And sambas fiesta is great for tower and seabed
You can also use TYB, Ultima reaper, Rico/Tyrell parasol, but FOs are so soft it's not really worth it when you have such good ranged options