here are some rough time scales for each section:
in the QR you have approx 40 seconds to answer each question,
in AR, you have 1 minutes for type 1 and 4 exercises and 30 seconds for type 2 and 3,
in VR you have 2 minutes per text, or 30 per question,
in SJ you have about 15 seconds to answer the questions..
Remember, you can always flag a question and come back to it, never leave an answer blank - they aren't marked negatively, just don't waste time on a question! Timings seems to be the hardest thing with this exam, so just keep an eye on how long you're taking!
Best of luck!!