 For aged product, my preference is to do recipe development full scale, as smaller-scale development isn't representative when scaled up (barrel sizes, still differences). Yes, it's expensive. However, it forces you to invest far more time into considering the recipe and methodology up front. Unaged product scales much easier I think, given similar still types and heating methods. 000L is not too large for recipe development if 000L is your production rig. Also, realize you can run that 000L with a smaller charge as well. I wouldn't waste my time doing anything on a T000. 