IMO, it's be better to get the female and leave the male behind. I could see where the breeder would be hesitant to sell the female alone since male hets are a little harder to sell.

As far as handling goes, you'll want to quarantine the new addition for ~3 months and not handle them back to back without at least using hand sanitizer (Some people go as far as changing clothes too). Just in case one has mites or a different health condition, it would prevent the other snake from getting it.