If this is a bear flag, the target is 1865ish, where 200MA lies. Nonetheless, a well-reasoned chart is always useless.
We are probably at the 8th innings of this bull market. SPX still has chance to revisit the top. The leading sector, XLE, has abundant chance to overshoot previous top. Here might be a buy point for XLE if you are a strong hand and willing to hold for mid-term.