Have a look at the babyjogger range, they are purpose made running buggies with hand brakes/wrist lease...they can't be used before six months though...they don't recommend using a normal buggy as there not designed for it. The baby jogger ones look rather OTT,well the top range one does but i've tested a few out (OH due yesterday so just waiting to make the purchase) and they do feel quite light and easy to steer/stop/start etc.
Not many places sell them in the UK but quite a lot on Flebay
Congratulations BTW.....The next nine month will fly by. 
PS pop over to the Mother to be thread..their a friendly bunch even to dad's to be 