Solve it by way of the Continuous Knapsack variant...So, what Gregor was saying in the main dev thread is actually the opposite - the player
wants the big coins first, then the small coins. The MC can go along with that to encourage dealing with a threat or confound it and encourage dealing with the load.
What might be interesting is to have the MC roll randomly as to what value of coin is given. This then becomes another bit of game theory - Kuhn Poker... ;)