Moped Army

hi all! i am new to the whole moped scene.

a couple of questions i was hoping someone could help answer.

first. there's a new Tomos Bullet (50cc) forsale at the dealer here where i live. is this a good model/type of moped?

second. i would really like to use a moped to get to work. i live about 12 kms(through residential areas) from work. is this to far to drive a moped every day? are mopeds good for this type of transportation. or are they just good for a casual drive around the block thing?

i weight about 240 lbs (trying to lose some) the Tomos Bullet says it's good to upto 320lbs. am i too heavy? will i still get up to 25-30 miles/hour with my weight?

please help!
thanks!