_sophiestudies_ Terribly sorry for my mistake there! Let me respond to your specific situation again then, with the single BSci in mind.
AngelWings You don’t need a 3rd because you’ll have the other compulsory units (maths/ stats, SCI1000, 4 units of Level 2/3 electives). Since you’re doing a double degree, you’ll have less wiggle room to do a 3rd Level 1 sequence.
This part is incorrect for a single BSci. If you’re doing a single BSci, a 3rd first year sequence is purely optional and will be using your elective spaces as Billzene said. (I actually did 3 sequences back in my day - I took biology, chemistry and maths (MTH1020/1030), but I know plenty who did just two sequences.)
AngelWings Yes. So you’ve filled that with two science sequences (24 CP) + the two compulsory units (12 CP).
This still remains correct.
AngelWings There’s a minimum amount of Level 3 units from memory (I forget how many though), but the maximum isn’t explicitly stated. I think you’ll be limited by how many units you can take due to the other requirements (like your major) and the prerequisite units anyway (and even more so since you’re doing a law/sci double degree).
This also remains correct, except you’ll have more science units and will be limited by the course rules, course requirements and unit prerequisites.
If my memory serves me correctly, there was a rule about not being able to count prerequisites more than twice e.g. you can’t take 2 biology majors + 1 biology minor because you’d be using your first year biology units (BIO1011/1022) 3 times as your prerequisites. I don’t know if this rule still exists.
Please also see Billzene’s response above for minimum level 3 units.
_sophiestudies_ Then you’ll definitely be taking a first year biology sequence (most likely BIO1011/1022) and probably a first year chemistry sequence (likely CHM1011/1022 or CHM1051/1052) for the minors you’re interested in.