This doesn't look too bad, in my market for $1000 inrents you want to be about 40 to $50,000 in total investment on the property. Buy fix everything.
So you are within that parameter.
I would not trust zillow values, I would if I had to pay a different agent, not the listing agent, for comps.
Although I typically don't care much about comps if it's going to be a long term rental.
Comps matter for refi or loan
One thing I would say, is at least in my area is very hard to find a 30-year amortized loan for an investment property. Everything around here for investments, that is properties owned in an LLC, is 15 to 20 years max.
So it's not an awesome thing you was a 30 year mortgage. And also you assuming 4.8 something which sounds like a personal Mortgage number, I prefer to do my numbers using six and a half of 7, because I want to make sure the deal makes sense with a commercial mortgage.
Feel free to PM me if you want my specific formula I'm happy to share it.