Need walkie talkies for factory - help!

Hi, I’m new to radios. I just need some advice:

Need about 6 walkie talkies for a 25,000 sq ft factory, so no more than 1-2 miles range is fine

Would like connection to a shoulder-strapped microphone

Want good quality without paying a boat-load. I have very few requirements so I don’t expect to pay through the nose.

Any recommendations on models? Thanks!