Max & Min Temps.
The normal range of assumed temperatures is from 30 to 55C. However the QRH shows that temperatures from 16 to 75C may be used. The maximum temperature is set by the maximum amount of thrust reduction allowable i.e. 25%; and the minimum is where the engine becomes "flat rated" and no further performance gain can be achieved.
The EDP is capable of approx 37GPM flow rate and the Electric pump about 6 GPM. with the higher flow rate the cooling is increased.
No, LE devices cannot be retracted with alternate system, the alternate system requires the hydraulics to be shut off to the LE devices.