it is good, but i prefer not to make strategies like this but instead wait and see what will happen and how the market will react to things before i move to act on it.
obviously i will sell some BTG at first wave to get some profit out but afterwards i will wait to see how the price of it moves. there may be pumps soon enough and there is good profit there.
as for bitcoin. i have been thinking about the possibility of a drop after BTG fork but it may turn out to be a bear trap. so if you decided to sell expecting a big drop, be extra careful.