Suggestions on avoiding capital gains tax definitely welcome....

Wife and i own house outright. No kids. Remaining liquid assets at current market value are 50% BTC and 50% traditional investments. Age, mid 40's. Very VERY small income, but don't really NEED to work from a financial point of view.

At the moment our plan is just to live in smaller income brackets to keep tax bill low. But, I mean, if BTC does what we all hope it does in next 20 years there might some rather painful capital gains. Or maybe we can live in BTC denominated economy in 20 years, but that seems a stretch.