Valve is easy. Crows foot to get the fuel line off it and then 17mm spanner down between the intake runners to remove. I use 1 sidchrome 17mm ring spanner and a $1 spanner from supercheap. for some reason the notches are in different spots. Once its cracked you can get it out easy.
You need to remove the DV completely. Your first pic, red circle. 2 bolts upside down. Remove them too so you can get a spanner etc in there to move the fuel line out the way.