to be honest it is impossible for the bitcoin price to grow that much right now thus you wont be able to buy a house for your btc for a really long time in my opinion
though if the price would go up that much i think you should buy eeverything you want if it makes you rich because after some time the price might fall once again
It is not that bad to buy a house with Bitcoin because to invest in a house is one of the best investments that you can make and that is nice for you and later for the future.
A house will almost never fall down in value so that is good for later if you can have some more profit if you are selling the house in the future.