Forge is definitely a key card here to trash down, and it probably should be your first purchase with 7. In fact, I would argue that your opening with silver/FV should probably have been silver/silver to really focus on getting to that first 7. However, you both ignored another important card here: stonemason. Forge with your first 7, but any other 7 after that should probably be stonemason overpay for lab (with 7). That way you have some draw in order to cycle to your forge. In fact, I would argue that witch is very skipable here and labs should be the priority. Rats is also very good here and should definitely be purchased at some point as it provides that great target for forge, but a priority is making sure that you can cycle through your deck to play forge as many times as possible.