How many small high probability options should I make in order to be profitable?

As many as you can!

There is no magic number, but if you have a 10% win-rate, versus a 65% win-rate, that answer is going to be different.

If you have a 10% win rate, you will need to win $10 for every $1 lost just to break even. If you have a 65% win rate, you will need to win $1.50 for every $1 lost just to break even, so the factors are more than just the quantity.