1. invest it in 1 altcoin (short term/long term)
2. putting your eggs in different baskets
which means i will divide my 0.004 and buy at least 3 alt coin (short term/long term)
For most altcoins; there is no such long-term, but for some potential coins such as eth, xmr, ltc, qtum, bytes, waves, yes you can hold it for few months or years and get higher profits.
Divide your investment into different coins will works if you have big capital.
It's better to invest in a potential coin such as iota, ripple or xlm, these coins are on pumping right now, but I'm sure xrp can rise at least to $5 and maybe $10 at the peak.
Yes, once you invest in a potential coin, you can be rest assured to get a lot of profit from those coins eventually. There are so many coins with potential and one cannot know the future or how long it would get any of these coins to really grow in value, but with some little patience, there is going to be a huge possibility of achieving a lot on these coins.
One thing we just have to do is to pick a coin that is not really too overhyped already and pick some very good coins, backed with good projects and some very good team and invest in them. If we spread that and come back to them in the long run, you should have seen what you have increased before you even know it. This alone a very good and promising way to start.