I drive my stang in the winter and I havent run a choke since day 1..well... day 2 =) . You need to pump the gas 2-3 times before starting it and it kill kick right in. Then keep it running for 5-10 seconds then you are ok.
When I got my 4 corner idle double pumper, wow! No hesitation at below freezing temps on an ice cold motor. Good stuff! Starts right up and idles! No choke horn whatsoever.
If you decide to mill the choke horn off, COVER EVERYTHING. Be paranoid. Expend an entire roll of duct tape covering everything up or you will have a permaclogged carb guaranteed!
Have fun!
CrazyPete