Is this a managable frosh fall schedule? Any "must-take" classes for CS+Econ track?

I want to get into CS/AI and finance, and want my fall schedule to not be suffocating while also clearing prerequisites for advanced courses

* CS 106B - 5 units * Math 51 - 5 units * PWR 1 - 4 units * FROSH 101 - 1 units

Total: 15 units

Is this too much? Are there any courses you'd suggest I swap out for others?

Also, I am not sure if I can take any IntroSems without scheduling conflicts or overwhelming myself with CS 106B or Math 51. Would you say that IntroSems are a must?

Thank you!