I think Horry would be a good idea... he seems like a good fit.
But how's his game held up? Didn't he retire after last season? Has he been staying in shape? There are a lot of questions.
Also, I don't really understand not wanting Perk on the floor in key situations. He brings rebounding, good post defense, shot blocking, and a nice touch around the rim to the court. Unless its a free throw shooting situation, I think he's a great guy to have out on the floor.