Honestly, grow it all.
a) you can shave things off anyway after 3-4 months if you don't like it, takes 5 minutes.
b) you'll never know what your beard can do, if you never let him try.
c) you'll be surprised how different the hairs grow. I am still seeing late growers each and every day. The beard seriously needs your patience man.

So all in all: don't touch it, don't doubt yourself too much, don't look in the mirror too much. Take photos once a weak. And when you think there isn't much happening because you are used to see yourself in the mirror every day and are not able to see the little differences - just compare the pics. And I bet you'll see the differences there.
Let it grow, be patient (as hard as that is sometimes) and make a decision after 3 or even 4/5/6 months.

http://jefffsbeardboard.yuku.com/topic/38186/New-pics-added#.VQzsUOH0_FQ