Give it a go now, this is the time to do some transactions, because the fees won't stay very low in the near future, until Lightning network will be ready... We are already over $10,000 now, and if the investors will start to put their money back to bitcoin, fees will likely to raise a bit again. I don't think that it will be 500 sat/B again, but nobody knows it for sure...
So if you want to combine your coins into one address or you want to send your coins from your legacy address to a segwit enabled one with low fees, this is the right time to do that.