After I posted yesterday, I read the sticky in the betta section. Probably should have read that before hand.
I see now that betta co-habitation is really iffy. That was not what I was reading other places online. So I'll probably just setup 5 or 10 gallon tanks to house our bettas. Maybe put in some live plants for hiding places and sit back a learn quite a bit more before I move onto larger tanks with more variety and upkeep. Thanks for you input.
Edit to add: I'm seeing that bettas like dogs, have different personalities. Two of the three bettas we have seem to be fairly laid back and come to the top of the tank for feeding anytime I walk into the room. Both were eating with 30 minutes of introducing them into their new tanks. The newest addition is a bit more nervous and prefers to hide.