4GB or 8GB RAM on Dell XPS 13

I’m enrolling as a Chemical Engineering student at UC Berkeley this fall, and I’ve decided on the Dell XPS 13 as my computer. The Signature Edition is only $799 at the Microsoft Store right now and comes with 4GB of RAM, but a friend of mine currently at the school said that it would be best to have 8GB. The nearest model with 8GB of RAM costs an additional $200. Is the upgrade worth it/necessary?

Note: RAM is soldered on to the board so I can’t upgrade it myself.

Normally I recommend 8 over 4, but there’s no way the extra 4 GB of RAM is worth $200.