I don't know your history or experience so please excuse me if this is below you. But if you have not ridden fixed before you may want to beg, borrow, or steal one and try it first. I personally hate it. Maybe I'm just a lazy a$$ that needs to coast. But keep in mind those pedals keep going whether you want them to or not. Before you go through all the work and end up with a bike full of good intentions but no miles. Everyone has preferences fixed is just not for me. Maybe you on the other hand will find your calling with fixed and love it and wonder why you didn't do it sooner.