No problem at all. I'm in the South, trust me, I get gamebirds. There's a pasture of them tied out not far from me. Just not for me. I also raise sebastopol geese and it is VERY nice not to have to worry about young arrogant cockbirds trying to fight and injure them if they are turned out in the same yard. Lots of real estate, but I've had issues past 2 years.
interesting to note... you'd said your SFH roos were aggressive...
the SFH I got from you, I lost the most loving roo of the 2. I was calling him 'redneck' for his very red neck. (yeah original). hubby nicknamed him 'underfoot'. because he was. constantly. got stepped on by one horse, split the skin on his breast. I cleaned it up and superglued to hold the skin together, and it healed just fine. then he got stepped on a second time, shattered a leg... so 'underfoot' is no more. his brother 'bubba' on the other hand, isn't as 'in your face' but at the same time shows some sense as to where he needs to be when someone is walking thru the yard, whether that's people, dog, or horses. and though he's doing his roosterly duties, is showing no signs of aggression to people or other birds.
as soon as the 4 were out of quarantine they were caged inside the horse trailer (coop) with food and water for several days before I turned them loose. you'd have thought they'd grown up with the rest, as they started mingling immediately. bubba still likes to hang out by my downstairs door (near the food bins) and his girls are usually not far, but he's one roo I don't think i'll ever need to worry about sneaking up behind me. LOL
sometimes I wonder if it's the environment they're raised in that determines personality to an extent. my birds all free range as soon as possible, whether due to age or quarantine or whatnot... The only one around that bothers the chickens at all is my crazy dog who enjoys running thru the middle of the flock just to watch them scatter, and rescuing hens from the 'gang bang' juvenile thugs. he'll run thru the group tumbling the roos over and keep running, giving the hen a chance to get away. only thing ever injured is their pride I think... but the hens like to hang out with the dog a lot more lately.
as for breeds, I've got mostly dorkings, with a trio of lf blrw, bantam blrw, a young/mature trio of sfh, and a bunch of bantam cochins. all are free ranging together. yeah we have a few squabbles between roos now and then, but no 'knock down drag outs' and no people aggression. my biggest issue is finding the hidden eggs. or finding the eggs, and discovering a 5' long black snake gulping down all she could manage. LOL
at least, with an egg 3/4 the way into her gullet, she didn't run far, or fast, or have any signs of aggression to people. LOL so into a grain sack she went, for a drive down the road... I like the duties black snakes perform, except when it comes to the birds. then she can get relocated.