Another possible short position entry is at 51264 which is the retest of the intraday trend support that price invalidated.
A retest of the trendline as a resistance, can offer a good opportunity for shorts, but the challenge with this entry is that price will be trading above the Key support level and might as well use it as a rebound to continue the buys instead of continuing downwards to 50700.
The SL will be best to place above the NFP's high (51505) at 51,520
Invalidation of the NFP's high will indicate price interest to go on a full bullish rally next week.