Instead of a booster pump you can replace the factory standard Procon pump with the optional Sta-Rite pump. Remember to get the stand that allows it to bolt in place of the Procon. If you need more air, you can tee off the incoming air line, add a solenoid that fires when the 3x Foam solenoid fires and add a pressure regulator. This will allow you to run your 3x air pressure at a different setting from your presoaks.
Personally, I gave up on the pods and put the 3x foam through the arch. It always looks good, provides even coverage (which helps since we use a protectant and not a conditioner), and doesn't freeze in the winter.
Good Luck