Heyyy I'l try to help!
Idont mean to be annoying but as a native spanish speaker I must say first of all since Hens are female I would call her "hermosa" instead of hermoso because the second one is for males. Paco is also a males', name or nickname, usually used for guys who are called Francisco. No idea it could mean free, don't really think so but maybe as slang in some spanish speaking countries, But if you're ok with them having guys names go right ahead!!!!

I personally like really old Ladies names, think of what your great grandma and Her mom where called, hahahah. I'll give you the names of mine, you can use them if you like them off course. THey're in spanish:
Clotilde, (a favorite for hens, dunno exactly why when people hear it they say, it's perfect!) small variation: Clota
Elvira (pronounce it as in spanish : El-vee-rah

that would make it cooler and less like that scary/sexy girl from tv)
Florinda
Teo (short for Teodosia great great great grandmas name lol)
Paulina
COrina
Faustina
Hope this helps!!! good luck with your new flock!!!