Recommendation needed: PWC alternative for global tax strategy for UAE based startup?

Help! I have a LLE in Fujairah and started to have clients in Europe and the US. Now the whole withholding tax issue has become pretty complex pretty quick and am not sure whether is should set up in Delaware additionally to at least to some extend minimize the tax burden (paying on income rather than 30% withholding on revenue..). I am trying to find a tax consultant familiar with especially US-UAE transactions that I can pay for a few hours to provide advice. A smaller PWC alternative or an individual... any recommendations ?