Math 10B, Bio 1B, Chem 3A/3AL, R1A doable in one semester?

Hi, I am a freshman (intended MCB) and I just started thinking about Spring 2018 schedule. I am planning on taking Math 10B, Bio 1B, Chem 3A and 3AL, and R1A in the Spring. Do you think this is doable? That would total upto 17 units. This semester, I am taking Math 10A, Chem 1A and 1AL, one breadth req class, seminar, and a decal (15 units) and I made it through the first round of midterms pretty smoothly. Would I be killing myself with two lab sections?

Labs can be killers. I think the bigger deal is that you are going from one science class w/lab (Chem 1A) to two (Chem 3A and Bio 1B). Anything is doable, I guess. Wait until the next round of midterms to see how you are really doing. There is a big leap from 15 units (with a decal) to 17, which look like they are all a lot of work.