I am thinking it may be wiser to pay off your house in the future with KYC sats than with coinjoined or non-KYC sats.
Therefore it may be good practice to keep both KYC and non-KYC sats rather than coinjoining your whole stack.
1) If the house is in your name then the payoff doxxes your UTXO addresses used.
2) If the sats used to payoff are already KYC'd, then theres no proof that you have other non-KYC'd UTXOs to try to force you to reveal to the IRS or banks.
Am I overthinking this?
Maybe. But with government it is better to be safe than sorry. I can see where they could assume the non-kyc came from illegal source like drugs. So they could cease your house. So your plan might be better.
You're not over thinking this. Bitcoin is a pseudonymous but transparent public ledger, so proving the source of funds linked to your name could be problematic if you ever draw the Eye of Sauron on yourself.
But I wouldn't even consider paying off a house directly with crypto - convert to fiat cash / commodities over time and spend that, pay off your house with KYC income.
This is an excellent take I had not considered. Just cover other living expenses with sats and pay off the mortgage with full fiat salary
