Heh, isn't it always the way - you try and get a quick job done in five minutes and an hour later you finally finish it! :D
I've a few mod fixes remaining that look like five minutes jobs but I've been bitten by that one too often to fall for it, I'm blocking out as much time as it'd take to redo the whole thing from scratch before I try and get it done! :D - maybe paranoid but then again it gives me extra time on the end to clean things up and do anything extra that I might needing to be done! :)
And, as you say, a change is as good as a rest! Also no need to worry about time sinks for Idle games, most people getting into them are very good as multitasking them and know what they are getting themselves into... I'm still catching up with one that'll take at least another year to complete! :D