Hi , hope someone can help..thanks ....Ok so I am travelling from Heathrow to Kuala Lumpur to Perth?

on Malaysian airlines.However there is only 2hours and 15mins between my flight landing in KL and the next one departing for Perth(do I have enough time ??). Is it possible to get my luggage moved straight from my MA flight in London to the MA flight to Perth to give myself enough time to go through customs on arrival and straight to check in for my next flight ,avoiding time waiting to recollect my baggage and re check it ?It says I will arrive at terminal M and depart from terminal M ...does this make sense .Is KL really a huge confusing airport? if anyone could shed some light on my question I would be very very grateful.Thank you for your time .