That is very big amount to invest but if i were you i think you may keep it in your bitcoin wallet. And wait the value of bitcoin will rise and your money get double. But you need patient to wait until the price rise get 100% profits.
i think that's good idea, but not the best idea, because hold is not make your bitcoin growing, i think trade is best solution, we can sell our bitcoin then buy back with take 1-2% permonth, so in 1year we can growing our money arround 12-24% it's better than holding
yeah, trade is much better with that we can get double profit, the first profit as increased value of bitcoin and the other profit as the increased amount of bitcoin with us through trading.