I would be able to do this job with no problem. I already spend plenty of time online every day. Part of that is spent on my own twitter account (which is doing fairly well - username OceanLady, if you want to check it out).
Wouldn't take much for me to add this to my list of daily to-do's. I also have an application on my computer that would allow me to easily track both my twitter account and yours, so if you want me to continue conversations with the people I'm tweeting every day it wouldn't be a problem, either.
My one worry is that I can control who I follow, but not who follows back... so if someone decides to follow the account who has the O_o avatar, I can't do anything about it besides blocking them, if that's what you want me to do. But I can avoid following them myself.