The optimal strategy is one which is played with an eye firmly on the Royal Flush. If players wish to adopt a more conservative approach to the game then they should amend their actions accordingly, hanging onto guaranteed wins and not breaking up any winning hands in pursuit of the big prize.
When all's said and done, a win is a win and if you'd rather keep your pay-out than risk it going for the bigger prizes then you should. Play in a manner that best suits your bankroll, aims and enjoyment of the game.