Holy Smoking HOT! That is really pushing it. Keep us informed if you have any issues. You are getting COIN right now and I hope that you can continue to get COIN later!
Yes, I'm like you. I wonder how long it will last?
Anyway, THAT is some serious mining there with the S7. Can't be done without increasing the voltage. Great job!
Keeping you updated :
My S7 Batch 1 is still going strong at 700 Mhz, 12.75 V :

How much are you making on kano pools daily avg. thinking about switching but what to make at less 0.032 btc daily.
You aren't going to make 0.032 btc with one 4.7 antminer...go on f2pool, search help, and you will see the per ths PPS rate. thats 96% of 100% luck or something like that. I'm on Kano pool, its not PPS but I feel the luck is better, and its also good to mine on a smaller pool for the network. PPS is my backup pool, for those few short times when the pool is down.