Best thing for you to do is to wait as hard as that sounds....

There must be a reptile expo around you at some point. Usually there is one in spring and then another in fall in most places. This also gives you the opportunity to research morphs you truly want and play around with a genetics wizard and see which morph would better suit your male. Another opportunity is to save up for something a little more exciting, even if it is only $100 a paycheck. A $100 jump can make a big difference.

I cannot tell you what morph you should get. With $300 you could even get a female with two genes in it but save up more and you could three genes or even something recessive like a piebald or hypo. Just look around at the breeders near you, find an expo close to you and save.