Warlords were considered weak before the release of Forged in Fire. Now they are considered to be much more on par with the other mages.
With a Warlord I generally want to run 2-3 Dispels, no Seeking Dispels, and no Nullifies. I don't think of either Nullify or Seeking Dispel as really necessary for most strategies.
In terms of mana generation, my Anvil Throne Warlord is my most economic mage, and doesn't use any arcane spells to do it.
If I'm not under pressure, I open with:
Turn 1 (19): Battle Forge -> Construction Yard (4)
Turn 2 (13): Deploy Meditation Amulet -> Meditate -> Barracks (2)
Turn 3 (11) [2]: Deploy General's Signet Ring -> Deploy Orc Butcher -> Meditate -> Garrison Post (4)
By this point I am generating 17 mana/round and get an additional discount of 1 on a soldier.
Once I have a bunch of soldiers on the board, I can follow up with Altar of Carnage to increase my mana generation even further.
How many creatures you should run will depend heavily on whether you plan to play the Barracks. I would run a minimum of 8 soldiers in a Barracks build. In a non-Barracks build you can run fewer.
As for equipment, I think you should run at least 2 Harshforge Plate, 1 Elemental Cloak, 1 Reflex Boots, 1 Leather Gloves, 1 weapon, 1 wand, and 1 Veteran's Belt or Regrowth Belt. That way you have a strong use for all of your runes, and you have strong defensive options.