Eonthar is looking for an extra feat, and noting a couple of combined Paladin and/or Monk feats, and came up with this one, subject to NLF's approval.
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Devoted Mage
Prerequisites: Smite Evil ability, Ability to spontaniously cast arcane spells.
Benifit:
-As a Swift Action that doesn't provoke an attack of opertunity, you may sacrifice one of your daily spells to add a bonus to your attack and damage rolls for one round.
-Your Paladin and Sorcerer levels stack for determining the extra damage delt by your smite evil ability.
-You may freely multiclass between Paladin and Sorcerer, though you still must maintain your lawful good alignment and deal with all other normal multiclassing rules.
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Basicly, it's a combination of Ascetic Mage and Ascetic Knight (The Monk/Paladin one). The only change is I removed the restriction requiring 2nd level spells, since I felt it wasn't that exciting. Basicly, you are already crippled as a multi-classed sorcerer in caster ability, and you've giving up BAB as a fighter type by multi-classing from a Paladin. So, the bonus to hit and damage isn't as devistating as it might seem (You either have a low BAB and lots of high level spells, a high BAB and not fewer low level spells, or are in the middle), nor is the smite evil (Which is par for the Paladin, and makes sense, and attempts are still limited by paladin level), as far as balance goes.
Of course, it's not a good 1st level feat, but you can always take it as a 3rd level feat, and take breath as the other 1st level one.
Hope you allow it, and hope it's ok.
Eonthar, other suggested feats:
Gift of Grace (BoED) - REQ: Divine Grace - Lets you split and share your Divine Grace between others, up to one ally per character level. Each person gets a bonus individualy, including your self, that adds up to your total charisma (3 allys and you get +1, you get +2 and someone else gets +2, 2 allies get +1 and one gets +2, etc)
Hands of a Healer (BoED) - REQ: Lay Hands - Lets you lay hands as if your charisma was 2 points higher.
Exalted Smite (BoED) - REQ: Smite Evil - When smiting, your weapon is considered good alligned for purposes of bypassing damage.
Ranged Smite Evil (BoED) - REQ: Smite Evil - Smite Evil with ranged attack (Which could be used on a attack roll spell I believe)
Servant of the Heavens (I think this is the right one) - +1 Luck bonus to one D20 roll once per day of your choice. (There are 2 other feats, but I think this is the right one for pelor)
Purify Spell (Metamagic) (BoED) - Evil outsiders take 1 die code up on spell damage, Evil creatures take full normal damge, neutral creatures take half damage, good none. +1 Spell level
Consecrate Spell (Metamagic) (BoED) - Damage gains the good descriptor, and 1/2 damage is devine and can't be reduced by resistance or immunity to energy. +1 Spell Level
Power Attack (Hey' it's useful)
Resounding Blow (BoED) - REQ: Str 13, Power Attack, Intimidate 7 Ranks - When criticaling with a melee weapon, opponent must succeed in a Will save (DC 10 + 1/2 Char lV + Cha Mod) or cower for 1 round.
Quell the Profane (BoED) - REQ: Str 13, Power Attack, Resounding Blow, BAB +8 - Evil creatures, when criticaly hit, must make a Fort Save (DC 10 + 1/2 Char lV + Cha Mod) or take 1d4+1 temporary strength damage.