-This is really the last time I'm going to try to explain this to you. If you want to achieve your personal best you need to work on your spin. It clearly sucks otherwise you wouldn't think 49/13, 49/14 or when hills are involved 46/15 was a good gear. Since you seem too short on time to actually train the only way you're going to accomplish this is by working on it during your normal rides. That means you have to gear down. -You can fit a cross lever on those bars. - ok add commuting and riding to the bar to polo and alleycats. The point is you're going from a pretty standard hipster bike regimen to wanting high tech road, track and cross stuff and all the goodies that come a long with it at once. -You shouldn't skip intermediate wheels because those are the ones nice track bikes are most often ridden on. Also you don't know which race wheels will work for you and you shouldn't really be riding on them in lower cats anyway since it's not worth it and you probably don't have the best bike control yet. -Doing exactly what you are training for all the time is not the best way to get good.