That's a tough question without having other housing options to compare it against. If you have enough equity in the house, you can refinance to get rid of the PMI. And you do get some benefit out of the condo fees. For example, the condo fees likely cover exterior maintenance and lawn care. So if you got a house, you'd eventually have exterior maintenance costs (roof, driveway, paint, etc) and a yard to upkeep. So your maintenance costs would likely go up. They most likely wouldn't go up $177/ month though, so there'd still probably be some savings there.
I think the best answer is that downsizing is typically a good option. Renting or buying something smaller is usually a good option to reduce your expenses. But without knowing what rent or a smaller mortgage cost would be, it's hard to say much else. I'd say it's worth investigating rentals and other houses for sale. You can then compare the expenses between them and your current place and have some solid numbers to make a decision on.
