Anything I suggest other than standard settings would be with 20 20 hindsight with the advantage of data mining.
So try 50% cash, 10% buy and sell safe, and 5% min buy, which are the standard settings.
There are other reasons for Aim other than absolute returns.
Would you be willing to sell or hold asit went up?
Would you be willing to buy more at the bottom and not have sold out?