in the classifieds right now someone has 4 DH males for 150 each just so you know.
tho i still think it be better to have the double het be a female so you can breed back her offspring and see if they prove out.
tho it might not be a bad idea to have a DH male. so many ways to go about this, guess it just depends what you get. mayb just get a DH male and as many DH females as you can afford? i donno what would be the most cost effective way vs chance of producing them.