invest bitcoin then holding it for 1year is good idea, maybe next year bitcoin will be stable at above $1000 but sometimes the bitcoin price can be lower and you must ready for each situation.
I think investing on bitcoin for 1 year is to long and to risky, because the price of bitcoin is really unstable and i think investing for under 1 year is a good one.
Unless the price is too high or beyond our budget, it is good to invest in BTC and sell it when you earn more than 25% profit.