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I would get a 20 gallon tank that you can use for 90% of your stuff, and keep the 60 gallon tank on a shut-of valve. Open the valve and fill the 60 gallon tank only for sandblasting, or jobs that use a LOT of air. Otherwise it will be slow to charge, and you will waste a lot of energy filling it up.
Either compressor is fine, I can't imagine why 155 psi might be required. I never set mine over 120.
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