Hummingbird feeders are fine, just don’t use any of the ready made red stuff or put anything it that will color the sugar water red. That is bad for them.
If your concerned with the fighting, which they will do anyway seeing as they are territorial by nature. Just put up more hummingbird feeders.
I always have a hummingbird feeder up in the summer. Never had any issues aside from ants and wasps.