Much better idea. Females take longer to mature and it would allow a lot more combos with your pastel male.
I was in the same boat because males were a bit cheaper and I didn't realize that females took an extra year to mature. I ended up buying a double morph male and 3 single morph females since I male can breed to multiple females with one male. I have the potential to make all sorts of great single, double, and triple gene morphs because of the snakes I invested in. I'm not a professional breeder but if the snakes can help support my habit then I'm all for it! I think you should invest in a single or double morph female that would compliment your pastel male. I would personally buy a Lemonblast, Spinner, Pewter or a Bumblebee. Breeding those to your pastel has a potential for great results.
Regards,
B