If you have the stock turbo on your truck then I don't know why you would be having trouble spooling But some 50hp tips should work good for you. They would give you more power without going over board on the egt's They claim that the 50's will lower egt.
IMO i didnt notice much if anything by going to a 50hp tip from stock. With your turbo and some 90's I think it would do great. I have 90's and get 18-19mpg on the highway.