It is wrong time to throw your 50% investment in altcoins. The market value of altcoins is contracting and we can see the same trend going on for some more time. Bitcoin dominance may cross 70% this month. So it is better to keep all money in BTC and wait for the moment. I think right time to go for altcoins is near Christmas. Trends show that prices of altcoins grow in holidays.
You may be right, but who knows, this is all guesswork. Personally I think if anyone wants to get into alts, now may be the time, and hope for a little altcoin season between now and the next couple of months. My reasoning is that if BTC's price has stalled out for now, whales may want to feed in altcoin waters for a while.
But buying in Dec could be pushing it, not sure if that'd be the beginning or end of any sort of altcoin rise, that could be around when BTC wakes up pre-halvening.