I'll suggest that you won't find a fan that draws only 7 amps. The 8" fans I have on my classic car draw about 40 amps together. I had to study the problem carefully because I can only get 40 amps at idle and 80 max with the old alternator.
More importantly, I've found that in both that old Charger and in my '94, my problems were not airflow as much as poor condenser performance. An upgrade in my second '94 to a Classic Air condenser made the thing work right, even idling in 95* city standstills. The older '94 with a whatever brand condenser would overheat and drop out right before the fan clutch kicked in, giving 30 seconds to a minute of AC fail and was weak after that until you got some MPH. Fans would have helped but the airflow is an accommodation to insufficient condenser efficiency.
More importantly, I've found that in both that old Charger and in my '94, my problems were not airflow as much as poor condenser performance. An upgrade in my second '94 to a Classic Air condenser made the thing work right, even idling in 95* city standstills. The older '94 with a whatever brand condenser would overheat and drop out right before the fan clutch kicked in, giving 30 seconds to a minute of AC fail and was weak after that until you got some MPH. Fans would have helped but the airflow is an accommodation to insufficient condenser efficiency.