There is probably a few AfterEffects plugins that are compatible with FCP that could do that easilly. But you have to realise that the more pro you will want to go, the more you will have to get your hands dirty and manually program keyframes. That's the only difference between a Pro App and a consumer App. You can do everything manually and achieve that custom look that doesn't feel like you just slapped a plugin.
Besides, for your title effect, it will take you so much less time to do thoses little keyframes, than to find, install and figure the plugin that can do it. We are talking of 10 minute job.