If you were an undergrad looking for a sales job, where would you start and where would you want to work after graduation?

Exactly like the title says. I'm a second-year undergraduate student looking to get into sales. I already have a part-time job as a sales associate (booking software demos for our reps) at a small startup, but I'm not sure exactly what my next steps should be.

My current plan is to try and get an internship at a larger SaaS company during my next summer as a third-year and hopefully get an offer to come back after graduation. I'm thinking about checking out companies like SAP, Oracle, Cisco, etc. but was wondering if anyone had some insight they wish they had known when they were younger