Regarding funds in taxable accounts: unless it's a large balance you will have opportunities to sell them in a tax efficient-ish way.
Maybe one year the market drops and you want to harvest 3k worth of losses. Or maybe you need to need to sell some funds anyway for a downpayment or college tuition. Or maybe you find yourself in the 15% bracket one year for one reason or another.
But as others have pointed out, it's not like the funds you mentioned are horrible, so take your time until a good opportunity to sell shows up.
Real example from personal experience: I had purchased about worth highly tax inefficient funds in 2012, early in my investing career when I was a young lass who didn't know shit about tax efficiency. In 2015, I married a low earning spouse. When doing a dry run of our projected 1040 in December, I realized that by filing jointly, we would be under the 15% bracket by a couple thousands, where long-term capital gains are taxed at 0% (praise Congress). I sold about 10k worth of suboptimal investments right around Christmas, in time to harvest a couple thousands worth of capital gains for free, and we ultimately squeaked under the threshold by like $50. Score!
I still have about $20k worth of investments that I would like to part with, but am in no rush to do so. Most likely they will be on the chopping block either for a home downpayment, at the first major market downturn, or in our first year of retirement.
The moral of the story is to keep abreast of the intricacies of the tax code and keep your eyes open.