In my experience any time you exceed 1 full injector size past what is actually necessary you make the car run worse, not better.
Personally, i'm a fan of running the injector you need at the time, especially if tuning isn't involved.
There is pretty much zero chance this car needs 30's, so...
He stated it’s going to get tuned. I guess we have differing opinions on this subject. If the car runs like garbage with 30lb injectors, it’s not the injectors fault.