@ledoux1238 , I have used high pressure compressor with integrated surge tank for nearly 20 years and never had any problem! For my Rockport arm and pneumatic anti-vibration table, I am using an Jun Air compressor with a maximum output of around 120psi and a 25 liter surge tank. At this high pressure, unlike in your set up, the metal surge tank was purpose built and came integrated with the compressor. There is a regulator to stop the compressor when pressure in the surge tank reaches around 120psi. The compressor will automatically starts again when the pressure in the tank drops below a certain level. The compressor is quite loud when it runs, so it need to be placed in a separate room.
There is a regulator with gauge at the output of the surge tank for you to set the output pressure. I have another regulator closer to the arm to gradually bring the pressure down to around 32psi. The regulator I am using can be adjusted in 0.1psi steps. A difference of 0.1psi is clearly audible.
I have never heard of the idea that the gauge disrupt air flow, but then I have no idea whether it would. I do not use any pressure gauge on its own, and always as a part of a regulator.