If i solo I end up as /nin. I don't have the really good stuff like O Hat or Rev Mail. But most of the gear I use is:
Weapon: Darksteel x2
Head: W. Turban
Neck: Ahsura Necklace
Body: Noble's Tunic
Hands: Blessed Mitts
Legs: Jet Seraweels
Feet: Blessed Pumps
Waist: Oceans Belt
Earrings: Antivenom/Insomnia
Rings: Tiger Ring/Garrulous Ring
Back: Rainbow Cape
Ammo: Phantom Tathlum
Food: Squid Sushi or Sole when I can afford it...
Usually works out great. Makes being a WHM even more fun. Hexa Strike is my saving grace, damage anywheres from 300+ to 900+