Forged isn't faster simply because it is forged. All forged pasrt do is help make the rotating mass a little stronger to deal with added pressure.
Running 10 psi on 9.1:1 is fine (depednign on turbo size), you just need to make sure you have proper fuel and timing to make it safe. Even forged motors can be blown from doing dumb things.
Running 9.1:1 compression also means you will have decent off boost power, it will feel like stock.
Adding gas is what makes power. Adding compressed air helps with combustion, but you need enough fuel to burn with that added air or you will have issues.