In the big picture the market may be forming a large triangle represented by the white lines. On the last dip, the market bounced at the red triangle apex and the yellow fork line. An undershoot of the yellow fork line is preferred so there still may be some downside to an estimated SPX 1044.
As far as timing, Oct 6th/7th looks weak. Oct 13th or 14th is the date I have flagged for a possible low.
This may seem to be a bearish outlook, but consider that from mid-October to Nov 14th looks extremely bullish in my cycle work.
Remember, I do not see the recent decline in Gold and Silver as a sign of building deflationary pressure. I see the decline as an unwinding of the safe haven trade. This is very bullish for SPX over a longer term.
The following is a possible route to a bottom for SPX. Important dates and geometry have been incorporated with a "best fit". The dates and prices are estimated. In the current volatile market, it is very difficult to be precise, and modifications may be required. Nevertheless it can be helpful to show a general view. It is always necessary to monitor behaviour of the market and fine tune in real time.