I don't prep holy word--it's so broken that it sucks the fun out of the game if you boost your caster level dramatically and it's useless most of the time if you don't boost your caster level. Like blasphemy, it's an example of poor game design.
At 7th level, I'm quite fond of destruction. Bigby's grasping hand is great for a strength domain cleric and sunbeam is really neat for a sun domain cleric. Bigby's is particularly useful for a melee cleric because it doesn't depend upon having a high spell DC. I've observed a lot of melee clerics use greater bestow curse (complete Divine, Spell Compendium) to kill enemies (hit them once and then curse them by reducing their con to 1--a lot of enemies will have poor will saves and this is basically a touch range save or die with a will rather than a fort save).
At 8th level, I always encouraged the cleric to take greater spell immunity. Escpecially if your DM is not hesitant to use blasphemy as written, being immune to it is great. So is being immune to power word blind, otto's irresistable dance, and sunburst, etc. Quickened divine power is very good for a melee cleric, but IIRC, your character already has full BAB, so it wouldn't be a big deal.
At 9th level, a quickened righteous might would be a solid choice for a melee cleric--especially if you have Cleave.