Markets a flat this AM. If you are interested in putting some cash to work, you may be wise to wait until the afternoon after some economic data is released this AM and AAPL suffers some selling.
The market can use a few down days as well.
That said, remember, when it feels perfectly good to get into the market, you have likely waited too long. The uptrend is intact, but time your entries well, define your risk in terms of position size and stop points, and know where resistance is on every chart you consider buying.