I am not much of a chartist I tried them in the past but I did not find them reliable I read somewhere that it works better with commodities or maybe it used to work in the past but I doubt it works with SPX these days with high frequency program traders
As long as the market is trading in your favor take advantage of it just be ready when the market turns
I would say after new years there may be some profit taking or it could be just a tweet about the trade deal not making it and that would spark a sell off much more than whatever you see on a chart
I am sitting on positive delta and positive theta and I am fine with it I just don't like the low vix because I have to get closer to ATM to get the same profit level so I am adding a few DTE's to my trade rather than coming in closer to ATM