if you're planning on carrying your gun concealed, the pf9 would probably be a better choice. HiPoints certainly seem to be reliable, but the big heavy slide is going to make it harder and less comfortable to carry all day.
Plus, like you said, it could be nice to have a couple guns for variety.
I would look around and see what's available used though. Sometimes you can get really killer deals, and if you don't find anything you can always buy one of your new options.
Good luck choosing though, and make sure you let us know what you get.
si vis pacem para bellum