Turbo Marauder 4.6l IC

[juno]

I expect to run 6-10psi of boost on my 4.6l. The turbo is intercooled. The settings on your pressure switch are a low of 3 psi. Does that give me sufficient protection and time for my spray?

With that low level of boost (10 psi max) would it be worth even spraying pre turbo?
Or spray just preturbo?
What sixe nozzles? 4.6 l, t64e, 60lb injectors.

Summers down here run 90-95 f on average and it cools off from December to February.