Both are good in their own ways, gold will give us secure profits in future and bitcoin will give us some quick profits in quick time, so I will choose to invest in both of them to gain maximum benefits.
btw gold had long periods of time where it was losing in value. if it was only going up everybody would invest in it.
but besides that i don't see why you want to make a quik profit with bitcoin and a long term with gold? if you are so sure about this why not invest all your money first in bitcoin and afterwards take it all to gold?