A lot of the Ripple pump was due to the speculation it was going to be added to Coinbase in the next few days, which based on the nnouncement made by GDAX doesn't seem to be the case. It may be added at some point (likely will) but might be much later then a lot of people expect, and with this some of the people holding Ripple may get impatient and dump causing the price to dip before the Coinbase addition takes place. Basically I could see more downward pressure then upward pressure for Ripple at the current time, and the upside is somewhat limited due to its massive increase recently and is extremely large market cap as a whole. It's not a horrible choice, but overall I feel there are far better coins/positions to get into at the current time.
RE: All alcoins in the red time to buy!