I don't know if it's the best time to invest in bitcoin as it seems to be starting a dump. I do know that I made a killing on dash and ether this week.
I think the smartest move right now is to invest a little bit into each of the top 10 to 15 cryptos (by market cap) and to perhaps pick another four or five "long shots" that show promise, if one feels exceptionally bullish on the overall crypto market.
The higher up the list, the higher the percentage invested.
Maybe go 25% in bitcoin, 15% in ether, 12.5% in dash, 8% in monero, etc.,, etc.
Edit: but skip on ETC (etherium classic), that fork is a joke, IMO
Some potential coins: Lisk, Golem, Steem, Augur...
Each coin have specific features, and maybe pump in the near future. I am waiting for the right time to take some of these coins
By the way, I like your idea :d