Selling everything is not an option and you can right now make good profits with selling but I think that holding it even longer is better.
You shouldn't sell everything but i can recommend holding it for a long period of because thats the best option to do because btc value has an appraisal for several years due to its demand. If you sell your bitcoins at exact time you can.earn profit from it thats the best thing to do but not all bitcoins, you may hold the other remainings.