Well, in my opinion I think taking both ways is good. Try to safe for the long term and invest in Coins with the best price predicten in a few years. While waiting you can still try and accumilate more coins by Flipping them over.
Spread your wealth on different coins. Some for long term investments and some to flipp. In addition you can also loan the coins your are currently holding for future investments to make the most out of it.
Greetings
Rikyu
RE: PIVX: Look Long, Not Hard