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I’m looking to winterize my sprinkler system which is on a half acre plot and has 8 zones. I tried to hire a company to do this for me, but apparently the only place to hook up a compressor for some of the zones is in my basement. Yes, my sprinkler system is terrible. I’ve spent a few hours researching air compressors, and I’m getting all kinds of contradictory information about what kind of air compresssor is needed.

1. Does anyone know if this air compressor which is 30 gal, 175 psi, and 5.1 scfm @ 90PSI would sufficiently blow out my sprinklers?
2. Would it be better to run it at 80PSI or lower (maybe 40PSI) to get a higher scfm?

If I must have at least 10 scfm, it seems like I would have to install a 220V outlet in my basement and purchase a much larger compressor which I would really like to not do. In advance, I appreciate the help; I’ve spent a lot of time looking into this.