It depends a lot of what will happen until the halving.
A lot of voices tell that Bitcoin is under valuated even now. If you remember, Bitcoin was 250$ not long ago and the mining did not stop. Now it's over 400$.
I don't expect much movement price wise, excepting some pump and dump.
I surely don't expect the price to double, that's for sure.
If needed, the market will adjust over time. Some miners will wait for the price to rise, some will not. Some are more efficient than others and will remain in the business, some are dreamers and stay in the business, some will leave the mining area. The difficulty will also adjust. You will not feel the difference.