If you have a laptop or pc you could download a macro program. There are many. Autohotkey is pretty popular with IT pros. There are probably easier to learn ones out there. Anyway all you need it to do program the macro to click the post button at a certain time. Probably a few hours after you ctb. Type up your post and leave it on the screen and the mouse cursor over the post button. You will need to do a few test runs to make sure that it works, that the screensaver doesn't come on, the cat doesn't move the mouse, the powersave mode doesn't come on, some stupid popups don't decide to come up on occasion blocking, etc.