Codes P0430, P0171, P0174 and P0300?

I scanned the car for codes due to my check engine light coming on and it gave me these codes p0430 twice, p0171, p0174 and p0300. I looked up possible causes and I'm getting vacuum line leak, maybe the gasket for throttle body or air intake, plugs and wires which are both brand new, catalytic convertor, 02 sensor and now I just need to know how and where to start on finding the leak if this is the case if not then what are your thoughts and recommendations on the codes it's got a new alternator, battery, plugs wires, oil change, and air filter. However, if I'm driving I can hear what I think sounds like a roar or growl like humming sound only when accelerating that gets quieter when I slow down or take my foot off the gas, but if I'm in the passenger seat I don't seem to hear it and when I start it more times than not it idles rough but starts. Please any advice is greatly appreciated. Thank you