[kaisersozei]

Depending on your job security and future earnings potential, this would be my recommendation:

Keep your current property, refinance. Rates are good now and you've still got some years left until retirement to pay it down. Take the equity, purchase your parents house. Renovate it a bit, then rent.

I'm not a financial manager, but my preference would be for land & property as a hard asset over IRA/Roth stocks. Good luck with your decision!