Erti may i ask why on earth you dont get the dogs fixed? If you cannot afford both, the male dog neuter would be the cheaper of th two. At a low cost spay and neuter clinic it might be very affordable, sometimes only 40 or so. You could save up for the female too, they could give you an estimate over the phone. Your local shelter could give you the number for a clinic if you dont know of one. Its cheaper than unwanted puppies in the long run. Just a suggestion.