if your going for the aerodynamic thing then you should remove your peak
Look at the top pros they have 2 sets of visors. Most run a very very short one except when it is raining then they put on a longer model visor only to keep the rain out of there googles.
i dont htink lyrca is so much for speed as it is for a status symbol. its the only race in the world where they all wear lycra, even the pros. so the answer to your question is yes. people would proably laugh at u unless ur on the uci world cup roster
but i find jerseys too baggy, would people laugh if i was racing in lycra?
Don't do it! If you turn up to a race wearing lycra yes people will probably laugh, they'll also expect your riding to be something special too so you'd need to be on the podium to justify wearing it...
Well i do have a fair few wins under my belt and ride a sick ass Ironhorse world cup. i think i could justify it