I don't think we will need to but the way we are building we can add on if we want. A lot of compromising went on but we both got what was most important. I guess you can figure out what I really wanted:')
You will be amazed at how nice it will be to be able to add on - there seems to always be need for one more thing (wash rack, etc.) Oh - and put the feed room and tack room on concrete too.