The temp is the chip temp?
Yes
Many of them is quite high compared to what i'm used to.... 113c?
The ASICs are designed to work up to 125C. The SW is limiting them to 119C
Whats your ambient temp?
I'm testing the unit at my room, which is quite hot now. I guess above 28C
Whats your recommendation for hosting environment?
It depends on whether the environment support free cooling. In Israel it doesn't, so the recommendation is 22C
Max ambient temperature is 35C
Does having fans at the front help?
Additional fans are unnecessary. You won't gain anything from adding them.