This is very similar to what I'm currently doing, just borrowing against my Bitcoin holdings using MakerDAO, I have good liquidity on a day to day basis and my Bitcoin is still appreciating.
As long as there's no bugs in the smart contract, I don't plan on ever paying down that debt, since I expect the value of BTC to rise much faster than the value of my debt. My liquidation price is very low and if it were to reach that, it would mean a catastrophe anyways.