Yea, Suel Arcanamach takes a couple levels to get off the ground, but is kinda fun and has some unique abilities. Combine 5 levels of AbjChamp with Suel1 and a Ring if Enduring Arcana, and you have nearly undispellable buffs.

I'd go Duskblade2/Paladin4/Suel4/AbjChamp5/Spellsword1/DragonDisc4. Dragon Disciple gives you 2 extra 5th level SA spell slots, which you'd normally not be able to get even if you continued to try to advance SA casting, since it is already capped.