TurboTeG4

Well Im goin to make a fully built turbo engine and have 440 injectors on order, but am having second thoughts to go with 550's. This will be a fully built b18c1 with a drag turbo on it with complete ef-1 valve train, etc. I wasnt planning on making over 300 whp but do plan on boosting up to 10-15 psi and that might easily make over 300 I have no clue. I was going to run hondata but my friend at the shop told me too just run what I have which is the vafc way. Will the 550's be my better choice and will my car run just the same with the same mpg