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i have ran the exact same setup on at least 10 builds . never any heat problems and believe me it would show up here in texas .

high flow water pump = water moving too fast though system. loose it .
160 thermostat = wide open system water moving too fast through system . switch to 180 .
1 16 inch fan will move air better...

12 in fans are useless . use a mechanical or get a Flex-A-Lite Syclone S-Blade Electric Fans 398 . i have used this fan on at least 12 builds . never used a shroud either .
condenser is adding heat...