@Chris O'Connor - Just don't be surprised if they raise the taxes once the sale goes through. We haven't been in that situation here, but have had it happen in two other states. That being said, the valuations in some cities are light years behind. To be on the safe side, for number sake, I would go with the higher number and see if it still makes sense to you to purchase.
We use an umbrella policy. It's cost-effective and easy. I have friends who use (or have used) an LLC and there are mixed reviews. It really is a personal choice and one that takes research on your part. There are plenty of posts on here about it, if you search.
I have used First American Bank in Las Cruces. Henry Apodaca there is pretty versed in investment properties. They do all underwriting in house and then sell to Wells Fargo. If interested in his contact info, send me a PM. Or you can easily find him on Google. Tell him I sent you.
Another one I have not personally used, but a realtor friend of mine swears by, is Tanja at Fairway. Again, if you want contact info, send me a PM.
As far as Title Company, we used Stewart Title and I had zero issues with them. I'd use them again if the opportunity arose.
Do you have a buyer's agent you are working with? I also have one of those in my back pocket. She's a go-getter!
Hope that helps!