That'll work.
Let's see how the big boy turns out...
Undead Unseelie Hoary Hunter
Medium Undead (Cold, Incorporeal)
Hit Dice: 46d12 (299 hp)
Initiative: +19
Speed: 30 ft. (6 squares)
Armor Class: 46 (+11 Dex, +15 insight, +10 deflection), touch 46, flat-footed 35
Base Attack/Grapple: +23/—
Attack: Incorporeal touch +34 melee (1d8 plus 1d6 Wis)
Full Attack: Incorporeal touch +34 melee (1d8 plus 1d6 Wis)
Space/Reach: 5 ft./5 ft.
Special Attacks: Spell-like abilities
Special Qualities: Damage reduction 10/epic and cold iron, darkvision 60 ft., immunity to cold, incorporeal traits, low-light vision, spell resistance 36, +2 turn resistance, undead traits, unnatural aura, vulnerability to fire
Saves: Fort +28, Ref +36, Will +30
Abilities: Str —, Dex 33, Con —, Int 15, Wis 21, Cha 30
Skills: Diplomacy +16, Hide +60, Intimidate +59, Knowledge (geography, nature) +51, Listen +54, Move Silently +60, Ride +60, Search +51, Sense Motive +54, Spot +54, Survival +54 (+58 following tracks)
Feats: Blind-Fight, Cleave, Great Cleave, Improved Critical (longsword), Improved Initiative, Mounted Combat, Power Attack, Ride-by Attack, Spirited Charge, Track, Trample, Weapon Focus (longsword)
Epic Feats: Dire Charge, Epic Weapon Focus (longsword), Overwhelming Critical (longsword), Superior Initiative
Environment: Any cold
Organization: Solitary, pair, or court (4-12)
Challenge Rating: 25+
Treasure: None
Alignment: Always neutral evil
Advancement: 47+ HD (Medium)
Level Adjustment: —
Combat
A hoary hunter's incorporeal touch attacks are treated as epic weapons for the purpose of overcoming damage reduction.
Unnatural Aura (Su): Animals, whether wild or domesticated, can sense the unnatural presence of an undead hoary hunter at a distance of 30 feet. They will not willingly approach nearer than that and panic if forced to do so; they remain panicked as long as they are within that range.