Current time is certainly a good option to invest in bitcoins. You can expect a return of 50-1005 in next 6 months. Price of bitcoin is quite low and you can get more for the same price.
I think you can invest now a days as well although bitcoin price is very high but its not going low and still its going high so Im sure if we buy bitcoin know a days so after some time it can give us profit because bitcoin price is now unstoppable and I think this year bitcoin will do a record business so Im also trying to buy bitcoin and some of my friends they start investments here so Im sure it will help to every one when they invest now.