Let's completely ignore undergrad debt here, so forget about the parent plus and the other loans. If if you don't consider those, you're still going to have at least $150k in loans from pharmacy school alone. I graduated in 2013, had a bit over $140k in loans by the time I got my license and first paycheck (interest went up a few grand from graduation when you go through the "exit counseling"). My minimum payment on the 10 year plan is something like $1600. That is a huge payment to be the bare minimum. Remember that a $100k income will be hit harder by taxes than an average income, expect to take home around 2/3 of that, depending where you live. What was deposited in my bank account this week was 58.8% of my gross income, after tax, 401k, etc. So if you're looking at 100k gross, that's $58,800 that actually goes into your account. Now that $1600 monthly loan payment x 12 months = $19,200 for the year, you are left with $39,600. But you've still got rent, groceries, car payment, gas, cell phone, internet, etc, to take care of. I won't bother coming up with figures for those, because they vary depending where and how you live. Bottom line, when you're planning a budget, don't think of $100k salary. Think of a $39,600 salary, because that's what you'll have for 10 years.
Oh, and that was ignoring the undergrad loans. You still have those to pay too, so that $1600 monthly payment will be higher.
