At the moment bitcoin is at position to achieve better price then gold so I would choose bitcoin at the moment. And it's also good long term investment just as gold, something that will have even bigger value in the future, so invest in bitcoin and if necessary you can always turn it into gold.
I believed on your statement bitcoin is quite high and expensive we already made up profit when the price is at the range of $800 per coin if we already bought atleast 5-10 bitcoin then we already made up $1000 profit just in a day, It doesn't need to invest on the long term when you actually love to hold your bitcoin you will be granted profit instantly when the price increase.