The list of supplements your taking now is pretty solid and I don't think you absolutely NEED to add anything else. I take all the above myself and consider this a good foundation to stick with no matter what supplements you add on top of it.

The suggestion for splitting the PWO carbs to a 50/50 maltodextrin/dextrose mix is a good suggestion though. The stuff only costs like $12 for 7 lbs so its pretty cheap and will last you a long time.