Since you've got 1 block a week of each at cae, i found it useful to do follow up study the next day after classes (or sometimes when i got home - i'm a nightowl), then fit in one study sesh for each subject a day or two before, then just sort of glance through the readings/homework in the train on the way to class in the evening.
This way i wasn't cramming before class in the arvo when i was starting to wind down, and wasn't trying to concentrate at like 11pm when i finally got home.
So for you, that'd work out like
Tues, global pol study sesh +ren preread
Wed, ren study sesh + english class + english homework
Thu, aus pol pre-read
etc etc.
But you'll figure out what works for you. Your timetable is so spread out :p ouch!
Your lote's probably also going to need a little work every day.