My guesstimate is that we continue to head higher into the report on Wednesday which may mark a top for this leg around 4200 SPX, after which we start to retrace within the uptrend to 4000 perhaps 3900 SPX to provide sufficient interest to then propel SPX to 4300+.
FWIW, my statistical data indicates weakness following today's Inside Day. Not a very strong bias, but strong enough that I'm paying attention and not getting too confident on the long side.