Min/Max Boards

Well I would rather choose a prestige that progresses caster level then to go straight cleric. Doesn't bone knight require heavy armor?  I could find dark pilgrim or doomguard and Ravager of Tiamut would not be allowed by the dm nor the paladin variant. Anyone have any other ideas for a melee prestige that advances caster level?  Thanks for info this far!

Ok so here's what I'm working with and need some advice on my melee oriented cleric. We are heading to abolyth kingdom or under dark or nine planes of hell after clearing giant kingdoms and I am trying to plan past level 19!

Race: Dark Elf / Red Half Dragon (no level adj basically drow template minus innate abilities)
Alignment: Lawful Evil (evil campaign)
Classes so far: 5 cleric, 1 Sorcerer, 3 Ordained Champion, 10 Dragon Disciple

Stats with items:

Str: 34
Dex: 26
Con: 26
Int: 20
Wis: 26
Char: 24

Domains: War, Travel, Time (I had war before I picked up ordained champion)

Feats: Divine Shield, Dragons Breath, Law Devotion, Animal Devotion, Persistent Refusal, Combat Expertise, Weapon Focus Heavy Flail (war domain), Improved Critical Heavy Flail

Current gear:

Boots of Striding and Springing
Bracers of Armor +8
Gloves of Dexterity +6
Crown of Wisdom +6
Monks Belt
Amulet of Natural Armor +4
Ring of Protection +5
Ring of Greater Elemental Resist (+30) electric cold acid and sonic
Cloak of Resist +5
Vestment of unholy might +6 Str, +5 Will Save, +5 Concentration check. Heal or Slay Living once a day, Righteous Might three a day, Unholy Storm 3 a day. 15 caster level
+5 Heavy Flail of Frost and Collision
+5 Animated Tower Shield
Robe of +6 Charisma and Invulnerability 5/- dr


No Tome of Battle since we don't use it in our campaign.

Thanks for your input!