So I posted a while ago that I was interested in starting to drive. We talked to our old neighbor who is into driving draft horses and stuff. A friend of his had a cart and harness set for sale. They gave us a great deal ($400 for cart and harness.) The cart isn't anything fancy, but should work (and very sturdy.) They harness is awesome quality leather except the bridle feels like cardboard and won't loosen up.
I went ahead and tried the harness on Angel today and I think she looks pretty good in it. I'm going to work with her and ground driving and training her for the cart before hooking her up and driving her (with the help of our old neighbors.)
Here is a picture of Angel in her new (to us) harness.