Yes, the kinders may be a good idea for you. They are developed from nubians and nigerian dwarfs (if I remember right). They are a smaller goat and supposed to be milky and meaty. I have no experience with them.
If it were me, I would focus on the milk, and then the meat will soon follow. You always have bucks that have to go somewhere. Get a goat you like looking at. I like nubians.

Nubians are pretty with their long ears and they have a lot of butterfat in their milk typically. They can be very big. I like big goats myself. I suppose the only practical thing that gives you is that they can reach up a bit higher for browse. And the bucks will be big for butcher.
Lamanchas I think are a very good breed to. They tend to be very calm and they are real good milkers with, IME, great tasting milk.
To me, it seems toggenburgs are a "sturdy" breed. They seem, to me, to be one of the most consistently nice built goats with good udders. Those traits seem to carry strong in the breed. Maybe I just haven't seen many bad toggenburgs? They are real good milk producers, and if you like a uniform herd, they are all patterned (about) the same. I think all the swiss breeds tend to be a little more aggressive? (toggenburgs are a swiss breed, my toggenburg really likes to be dominant over the other goats). Some say toggenburg milk isn't very tasty, as they were bred for milk for cheese, not so much for fresh drinking. When my toggy freshens this spring, I will know - at least in her case.
Saanens I have no experience with. They are supposed to be heavy milkers, but to me, them just being white is kinda boring. They are not attractive to my eye, but to some I'm sure they are.
I also don't know much about Alpines (also swiss),
some say their milk is strong (but don't say that out loud around here).