The mill you are looking at should work. You may need to make a couple minor mods as shown in the ugly junk corona mill post but it can do the job. I considered a cornoa type mill but decided to go the route of a roller mill. I am happy I did. I went with the millars b2 mill on amazon for $100. It is built well and does a bang up job. A tad more than a cornoa mill but you get a roller mill that simply needs to be mounted to something to use.
Not sure if you already made the buy, but you can always just buy your grain milled to start. Obviously, lots of people like to have complete control over every stage of the process, but don't let the cost of a mill be an obstacle to going AG.