Been long since cup-handle back in Nov, but you should wait for confirmation of the flag before jumping in (If you're going on technicals). This can invert real fast, esp if geopolicatical/macroeconomics forces market down.
In regard to waiting for confirmation, the second portion of a flag is typically identical in time and magnitude to the first portion, the "flag pole." The flag pole in this case was a 2 day move. You'd better have your finger on the trigger when the flag is confirmed because it should move very fast. Personally, I bought 1/2 of my position today and will add the second half upon confirmation. In the end it's a risk / return question.
I looked closer at the chart just now and I am wondering if the flagpole really is only a 2 day move or whether it all started back on the 21st of May...0r perhaps even the 20th of April. What do you think? What is the real start fo the run?