So I have 4 units to do this coming semester ACST255, STAT271, ACST305 and ECON360. I feel like learning more once again and was wondering if there was anyone who has taken 6 units for a semester? Does anyone know the likeliness that I can get approve for this considering I've done 5 units for the past 4 semester
You should really stick with 4 units because of the combination of subjects you listed.
ACST255 - Pretty straight forward, but still requires work because it's ACST
STAT271 - This subject is not easy. Lots of people missed out on their exemption in my year (although it is definitely doable).
ACST305 -
This is the subject that concerns me and is the reason why you should either stick with 4 units or delay this for another year (which is perfectly normal) and pick up some other courses.
ACST305 is great fun, but it requires hours and hours of study in order to understand the concepts.
Ito calculus is generally taught to people doing postgraduate study, but you'll only have two weeks to cram some very foreign concepts.
To understand these concepts properly takes time and failure to do so will make you fall behind since the rest of the course builds on these very ideas.
On top of this, I'm pretty sure that you haven't completed ACST354. Even though 354 is not listed as a prereq it helps greatly with understanding the material in ACST305 (specifically the stuff on stochastic processes). The other students in the class will have done 354, leaving you at a severe disadvantage.
Completing ACST305 in second year will result in you gaining a significantly lower mark than what you could have achieved had you delayed the subject by a year.
However if you do wish to do ACST305 next semester good luck. But its a really bad idea to overload with the program you just listed.