Purrly

Hey all . Just looking for some opinions. I am thinking about changing out my Intake Manifold, throttle body , and MAF. I'm kinda leaning towards the BBK setup, but then Trickflow caught my eye.I still have the stock 65mm TB and the stock MAF. At last count, the engine has around 340-350 hp. What would be the best way to go and how much HP gain will I get? Also, what would I gain from bigger injectors? I think she has 24lb right now but not sure.
Thanks.