71C is a little high i think! isn't it?
Should be ok, my 3x S7-F1 run at 73'c ( ambient 35'c 3pm local time) for 2 months already, so far so good
Keep in mind it is during summer during all of this. So for me I personally use decent fan's with high CFM's and push the air away from miners in my mining area. I'm not in a area evaporation cooling is effective. So during a pretty hot day I'm happy with it and no damage from it.
At night it is already in low 60's and will get lower chances are later. Mining during summer for many like me means mining a little hotter. But the S7-F1 handles it fine so far.