I've completely changed my position on this. I won't buy a house with bitcoin, at least not my first house. I will buy my house soon, with fiat I have saved up and a big mortgage at low interest rate. Low interest rate = almost free money. So I will take advantage of that free money, and keep my BTC stash intact for now.
In a few years I might be able to buy a palace or a big building with the BTC !
There's a risk on what you are going to do but the reward is really high, good luck, you really are a risk taker.
As for me, I will secure first my house and then I will just invest my excess money, a house is already an achievement and if I have a
chance I will surely buy one, it's my first house actually.