Keep the KYC'ed UTXOs separate from the non-KYC'ed (separate wallet or strict coin control). I have some KYC UTXOs that remain "forever" in cold storage and will not move. No need to coinjoin here.
However, every non-KYC UTXO I coinjoin now as the fees will be higher in future. Right now, it is relatively cheap to go into whirlpool as the mining fees are not that high.
Keep the KYC'ed UTXOs separate from the non-KYC'ed (separate wallet or strict coin control). I have some KYC UTXOs that remain "forever" in cold storage and will not move. No need to coinjoin here.
However, every non-KYC UTXO I coinjoin now as the fees will be higher in future. Right now, it is relatively cheap to go into whirlpool as the mining fees are not that high.