Generally, it's best to get the opposite sex.
But specifically, IF you have raised/trained/socialized your male so you know he isn't going to be the problem
You need to really do your 'due diligence' when finding a breeder. There is a difference in lines and how 'sharp' their dogs are as far as getting along with others. So if you find a responsible breeder who has had enough litters to know how they grew up, and how their dogs are, and what they are breeding for............ then they should be able to analyze their pups and recommend one (or not).
For instance, I prefer females and have had 3 at the same time with no issues and problems. That said, my breeder had a litter coming up I was asking about and she refused to even consider me for a female from it because she knew how the bitch was. GREAT info and so clearly I waited for another litter.
MACH3 Bretta Lee Wildhaus MXG MJG MXF MFB TQX HIT CGC TC
Glory B Wildhaus AX, AXJ, XF
"Behind every great man is a woman rolling her eyes." - Jim Carrey