I haven't read through all the replies yet so if any of this was already said, I'm sorry for getting here late.

here's what I see

1. A year is way too soon to know if this person is the one you want to be with the rest of your life, but I'm guessing you are thinking this or know this too.

2. His attitude on moving, regardless of whether half cocked or well thought out, it is clear he is not considering YOU in this which is really a bad start for a marriage. If, on top of that he seems to not know where he is going in life, that's just icing on the cake there. With regards to him not considering you and your values and thoughts, he has also made this clear in his ultimatum about kids. Kids are big subject and their upbringing has to be in agreement not choice by one parent. Unless you agree with him on how to raise them at that point, I don't think having children would be fair to them.

3. your thoughts on your fiancé, are clear in how you talk about him. he does not in my mind seem to be someone you're sure of spending your life with at all, there are too many warning flags. You state that he has misconceptions, his ideas are half cocked, and not realistic and these are not about things that are small but life changing choices. Marrying someone that clearly has differing ideas, values and plans is just asking for a life of pain.

A lot of things need to be worked out here and you're very mature in thinking that you should consider them. He may end up not even being someone that you want to spend your life with and at this point I don't think you can know either way for sure.