Only drawback to that is the commissions. You may find it's cheaper to buy 10 contracts at a higher price than 5 x 2 contracts at a lower price.
No matter...it's fun. As I said if the stock does run none of this nickel and dime stuff matters.
BTW... I understand your strict rules and discipline about investing as you explained them. You might want to think about how to keep to your plan and not cramp your overall plan which is to make money in the smartest way possible. Not a discussion for a message board. NOT that you are doing badly in your own way. Just saying.