Sorry, but you obviously haven't had your geckos for very long. It is much too late in the season to breed them now,

and if you are going out and catching their food you are putting them at great risk as the crickets and grasshoppers (which you do not feed to leos in the first place)

that you get could be contaminated with insecticide, also they have not been gut loaded so have no real nutritional value for your geckos. It seems to me that you have too many as it is. You have MUCH to learn before you are ready to be a leo owner, the best thing that you can do for the ones that you have is to find good homes for them until you are fully educated on how to care for them and have the financial means to do so.