Hi @Teresa Miller,
I'll wholeheartedly vote for the roomate option, especially since you have extra rooms.
My wife and I have been doing that for two years and have virtually zero regrets. We did it to pay down her student loans, but it's also opened us up for investing as well.
She is in a graduate school program. We started by renting to another student in a different program. It opened our eyes to just how transformative this could be; so we added another, completely covering our mortgage. The first month with our mortagage fully paid for was a truly wonderful feeling. We shifted some things around and now have a couple living with us as well, which covers 100% of our house related expenses—mortgage, remodel loan, city, energy and cable & internet. Grad students have been awesome tenants because the school administers background and drug tests during the application process, they're ultra-motivated to be successful in school, and have financial aid: so they know where rent will be coming from all semester.
Our next move is looking at a triplex that we would move into for one year in order to do FHA financing and only have to put down 3.5%. Meanwhile, our current home will be fully covered (and then some) by our tenants and building equity.
For us, generating additional income has been way more enjoyable than living like total peasants to save. We still have a lean budget, but we cut mercilessly on things we don't love so we can spend extravegantly on things we do love. For instance we actually upped our eating out and coffee budget some so we could go out and offset the effects of losing some of our privacy at home.
Best of luck and keep us updated as you start formulating a plan.