Full protection is the only way to go Mike. I used a full face and had no problem with it.
When something gets kicked up from the road and just glances off your face shield, you'll be glad you had it.
There's so many choices now, and the flip up is very functional as well.
Very good points by Nonick. I recommend you get yourself a good jacket and boots too. You want to have the best protection you can get. Hopefully you never have to find out, but it's good to know it's there if you need it.
Keep us posted on your decision, and be safe.