<human>: I'm a father of 3 and have twins about to start college and a third going to college in 3 more years.

For one of my twins she is in a very good position she got a full scholarship to a very good school, but she also got accepted into a prestigious engineering school as well. The second school is her personal choice based on what she wants to do for a career and I do support this. But we have to look at how affordable it will be.

We promised X dollars a year for her college. We are waiting to hear about what the school will offer. But my question is what is a reasonable level of debt to graduate with? Lets assume that when she graduates she can get a job paying 60k / yr.

Can you condense the text into a few key points?
<bot>: if you will graduate with a bachelors making 60k/yr what is a reasonable (non crushing) level of debt in student loans to take on?