When we've travelled with family, it works best if everyone has their own room. It's nice to have a place where you can go & shut the door! For this reason, we wouldn't choose a 2 bedroom with 3 couples. Also, in our family, none of the early risers like to stay up late, so it would be hard to figure out who to put in the living room/kitchen area.
You've got a lot of good information here. If you decide you still want a suite arrangement, but do not want to pay the onsite price, go over to the Orlando hotels board & you will get plenty of help finding an offsite condo or home rental. They are a lot less expensive (under $200/night for 3 BR), often very nice, but lacking the onsite ammenities (transportation is the biggest one for most).