You have to figure out what level of risk you are willing to take to get the results you want. First, you need to figure out what your goal is for that property after PA school is complete. Real estate generally goes up but she could be graduating in a down year and you're stuck holding it.
Private loans may not offer an extended payment period. However, it's still worth asking. I'll tell you what I did because I'm in the same boat as you.
I had cash available to pay down my students loans by about 10% but not pay them off (90k). I extended them out using income based repayment. Yes, I'm a financial planner. Yes, it's dumb to have that much in student loans without a better major. No, no one gave me any guidance along the way so I made dumb choices as a kid. I digress. It wasn't going to change my lifestyle or lower my payment. Student loans just feel like a weight around our necks and they really can destroy one's ability to dream about the future. If I paid them off as quickly as I could it would take me at least 5 years. I don't mind delayed gratification but I'd like to live life along the way. So I moved my money into real estate.
I bought a small property for 150k that cash flows $200/month and the loan gets amortized at about $200/month the first year. My student loan payment is $400. I'm already used to paying it so I just keep paying it and I put the $200 in a separate account to help with maintenance and the next deal. This is a risk I'm comfortable with taking.
In 5 years at 6% appreciation (which I think is conservative but we will see) the property will be worth almost $190k. The mortgage will be paid down to about $137k. That will pay about $53,000 toward my student loans (not including taxes if I sold). I will most likely try to do a cash out refi at that point. So now I'm looking to purchase my second property and repeat this strategy every year. It's not flashy. It's not crazy profits. It's conservative but once again that's the level of risk I'm willing to take right now.
If you can find a multi family that can do the same for you and you're okay with the risk then get after it. If you're not okay with the risk then you should probably rent or find a different strategy.