If you have powered mics, you will not need a "MIC" input, but you will still require a "LINE IN". I'm going to go and check to see if that model Sony you're looking at has a 1/8 Line In, but I think that model is what it says - USB only. That won't do you any good in the field.
As it is, I suggest you ditch Sony and look for a Sharp. They're built with tapers in mind!