2 20amps enough???

So my mmg is in a warehouse I Have access to plenty of juice just need to put boxes in room..I'm thinking two 20amps should be enough..I'm running 4 lumatek 1000w 6in fan to cool lights,4in fan to exhaust thru filter,dehumidifier(30pt),co2, oscillating fan, and probably gonna need AC in summer, veg is two t5s now but upgrading to 600w mh soon and environment controller ...any advice
 
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