as long as you pass all the first year units in SIBT you will get into MQ. Failing units even twice, then passing on the third time is still enough.
I dont even know if UWS is easier than SIBT so unless you plan to change your attitude to study, then it wont help you get your degree. The main positive to moving to UWS is the $ savings.
Positives to staying at SIBT though are numerous. Even though sibt/mq courses may be more difficult to pass than UWS (are they?) SIBT nurtures your learning to make sure more students pass. Checking your homework, taking attendance, 3 hour lectures instead of 2 hour, lectures with only 60ish people, things explained in more plain english because of the high number of international students. I couldnt believe how easy SIBT was making learning for me. The other positive is the fact that an MQ degree is looked on more favourably than a UWS degree.
Even if you get a bad GPA in SIBT, it doesnt matter, because if you get admitted to MQ, your GPA starts from scratch.
You need to analyse why you failed those units. Stat you get a cheat sheet so if you looked at the lecture examples and tailored your cheat sheet to help you answer similar questions in the exam you shouldnt be able to fail. in ACCG1A again the final exams is basically made up of the lecture examples using different numbers and figures and some elementary theory. Theres no trick questions, everything is given to you in that SIBT 1A book they give you (which is a another positive for SIBT), so if you master that book and the homework without having to look at answers etc the exam should be a piece of cake for you.
You should also analyse why you passed those other units. were they finance/econ? did u put way too much study into those and not enough into stat/1a?