Guide on studying 4 papers at once. F4,5,6,7

Hello my fellow ACCA students, i need some guidance on taking these 4 papers at once. Here is a brief description of me currently. I have some background in accountancy but ain’t that strong. I cleared my first 3 papers with a decently high score. I prefer calculation over theory but both suits me quite well. I am also a full time student. What i am trying to find out are the following. Note to ALL: It is okay if you did not take 4 papers at once, i will still look through all your suggestions! 🙂
– How many hours should i study a day? ( for eg, lets say 2 hours each paper a day, equivalent to 8hrs a day)
– When should i start my revision? (I have yet to choose the course, the course last about 4-5months, when should i start studying? eg, 2months in, or 3 months in etc…)
– How should i split my time to study so that i can make the most out of it? ( split the study sessions into multiple sessions?)
Thanks to all those fellow ACCA students that chipped in your opinion! I will think about ALL your suggestions and i will come up with a final plan myself.
Have a lovely day,
Flavian