Food:
Fish Feast or Blackened Dragonfin
Spiced Mammoth Treats or Kibler's Bits
Flask/Elixir:
Flask of Endless Rage
or I would guess Elixir of Mighty Agility and Elixir of Mighty Thoughts.
I only use flasks, so I could easily be wrong on the elixir pair.
Ammo:
Mammoth Cutters or Saronite Razorheads
Timeless ammo is only slightly better and much more expensive.