Vitaali
1) With Aim you NEVER run out of stock.
2) With Aim, if you only have buys you will run out of cash with a 50% drop if you start with 50% cash. That should handle most situations( would you want to keep adding more cash anyway?) Someone made a table starting with various cash amounts.
3) You can NEVER know how much cash you will need in advance. You can always decide to use no more than half the remaining cash. You will then NEVER run out.
Perfect is the enemy of good, or more literally the best is the enemy of the good, is an aphorism which is commonly attributed to Voltaire, who quoted an Italian proverb in his Dictionnaire philosophique in 1770: "Il meglio è l'inimico del bene". Wikipedia
Take the road less traveled. It will make all the difference.