That's what I will do, love it - 9999! I was hoping CI could keep the IPs of the regular users and be exempted, have the same features as before . I agree with Miserere that signing in every hour is not practical...
I haven't changed anything regarding logging in, staying logged in, etc.
However, I purged some "temporary" tables a couple times, and that might cause you to need to log in again -- I don't know.
But yeah, just check the [X] Stay logged in box when you log in, and you should be fine. That always works for me.