Q: My 2 iPhones, syncing both to my iTunes sharing info

I Have 2 iPhones, one I use for my work is already synced to my iTunes account. The new one will be a personal phone for friends and family. Can I safely sync both phones to the same iTunes with the same apple I.d. and iCloud I.d.? Is there a problem that will arise if I do?

The phones are both mine, so music, photos, apps, contacts, calendars, email can all be on both phones. Only I will be using the two phones and they're both assigned to me.

DO I need to create a separate iCloud i.d. Or will iTunes know they are 2 separate lines? Will sync copy all the apps, music, movies, photos....to both phones? Do I have to set up Family Share with iTunes?

Any direction, advise is helpful.

Everything I see on the net is to share a computer, but these are both mine, I wish to share the info, just not the numbers.

Thank you