I do not think that would be a good idea is clear. I just think you have to keep your coins and quietly wait and see what will happen. It would be a shame if you miss money.
If you can afford to buy with current price then you should buy few of them, as price will be surely very high at the time of halving.
It is difficult to say. The price might have already responded to the halving. The price might not rise after the halving.