I've already tried something like this. I found that Twitter suspend the account incredibly fast if you interact with the website automatically. They can tell it's not natural. I switched to the API which is much more lenient.
My goal here isn't to hurt Twitter, so by limiting any sort of automtation and choosing selectively, I think this is a win for them.
Not to mention I want to avoid getting people in any sort of trouble at all. If spaced out properly, this bot should, theoretically, be nearly impossible to detect.