Yes, its very good to long term invest your bitcoins you can also look at the halving later this year maybe you can than even make a lot of profit on a short term.
If you want to do it on a long term you should hold them till there will come another halving these year.
The another halving will be in the year 2020, so don't wait that long, wait till this halving and you will get all your answers, if price pop up then you should sell your coins without any hesitation.