That's a nice list you compiled for us!
I'd like to try most of the calendar and contact ones, but I've already installed so many apps I don't want to lose, that the memory is almost filled
Instead of Tasker you mentioned, I'm using the free Timerific
, and that's just fine for me as I'm on nearly the same weekly schedule most of the time, and that doesn't support location-based switching (gps/wifi), like Locale
does but that is even more expensive then Tasker
(but has a lot of extensions/plug-ins).
AFAIK, GPS in enabled state hardly uses any power, and is turned on automatically by apps that want to use it, so you probably don't need a scheduler/tasker for that.