I think you know how to build the stats of a team, but just a reminder, your pets should only have either strength OR intelligence added with stat points. Also, make sure the proficiency tree you're using matches the physical/intelligence based attack of your pet.

Your two fighters seem ok. Though if you can, try to get them better equipment. Try not to use equipment that has all four stats evenly distributed. Find one with higher strength/intelligence, and higher agility/dexterity. Try not to use equipment with both higher stats in strength and intelligence, since it'll mean some of the stat bonus would be wasted.

I think your health pet definitely need better equipment. And I can't really tell if it's meant to be more of a physical or magical attack. Decide on either physical or magical, then find equipment with the higher stat in the respective stat (so either strength or intelligence, whichever you choose) and agility. Agility is good for the first pet since it'll receive the most damage, and agility helps increase avoidance chance.
Also, it seems like you're going for a full health pet. So I can't say whether it's a good setup, since I use a half health-half agility set up for my tank. I've heard of people using health based pets, but i'm not too sure whether just high health is good enough to sustain a lot of damage.


On a separate note, when I had trouble fighting in an area, I used to go back to a lower area to fight and train my pets till I'm slightly over the average level for the new area, then continue.

Hope all these helps. =)