I just needed some feedback regarding labs and tutorials. Should I put the lab and tutorial after all the cores?

Labs are often based on material learned in class, so having the classes scheduled before the labs can be very helpful during your lab and when doing your lab assignments. It's not a big deal, but if you can, schedule the classes before the labs.

Which labs in particular? For some, they help reinforce the concept, for others, they don't always correlate, so it's not that important. I know for Bio 2A03, the labs actually clarified a lot of material that I was iffy on during lecture, but for Chem, I'd want to go to lecture before the lab.

Edit: Also like reading notes before lectures, tutorials and labs can sort of help "prep" you in advance

I have a lot of my labs and tutorials after the second or three cores, what does that mean in terms of having learned the material for that lab? And how big of a disadvantage is it to only have one lecture before a lab?